There could be Spoiler! There could be not! There's a lot of guessing and keep your mind open and just read the fanfiction.

By the way. Adrian Crevan isn't the Undertaker actually name…That someone fanfiction name given to him. Like Ciel given Sebastian his dog's name. Until the manga states that his real name. I will believe you…Otherwise…Enjoy…

I'm NOT COPY!

I'm curious.

I really want to ask the Anime Theories guy to so this one and satisfy all of us fan girls and fan boys.

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Could the Undertaker be Ciel's Grandfather?

Well, in this theory! I've been wondering about this for a short amount of time since I began researching and reading parts of the manga that reveal to us the lockets and all the crap I don't really know about. But half of my source come of thinking, comparison and reading the full Wikipedia pages of Ciel Phantomhive, his father, Vincent Phantomhive, and his Aunt France Midford (Phantomhive), and even the Undertaker. And a little Fanfiction.

Also this was hard as shit because the number ZERO must exist in order for this to work…also Ciel is a December baby, who he isn't fourteen yet….

Now to start the base of my theory is on the timeline surrounding Claudia Phantomhive as she is the main spot of the whole plot behind the curtains.

Reading a bit of fanfic. Which I know aren't facts, but they have a general ideas of ways to depict the mysterious grandmother of Ciel Phantomhive.

Some authors' ideas range from Claudia being either the Watch Dog herself or being the wife of the Watch Dog. And other went far as Claudia meeting the Undertaker at a very young age, but let's not go there…yet.

Either of these idea are possibility. And this theory of mine, will support Claudia being the Watch Dog herself. So yeah to those to wrote about Claudia being the Watch Dog. Hoary for you!

THE BEGINNING OF THE TIMELINE

From the manga with that quick panel of Ciel's family tree. We see that Claudia Phantomhive was born on April fifth in 1830.

Claudia Phantomhive's family tree is shown that she's an only child to the previous Earl of Phantomhive during her time.

In a short life summary. She lived to be thirty-six years old, had two children, a possible husband, and played the role of Watch Dog to a young Queen Victoria.

At this time, you begin think that you already know that, but I'm doing this theory by a timeline, not manga chapters or pages.

Now.

In1889, on luxury cruise liner called the Campania. A man only known as the Undertaker is revealed to be a Grim Reaper or Shinigami. A God of Death in Kuroshitsuji (Black Butler.) They are immortal beings, who collects the souls of the decease, reviews their lives through Cinematic Records before sending them or condemning their souls to either Heaven or Hell. On the ship, Undertaker claims, in a way of nostalgia for him.

"It's been half a century since someone last call me that."

Referring to the Shinigami title. *If you don't know what a half century is? Its proximity fifty years.

So if you were to subtract fifty years in 1889 to the time when Undertaker abandon his glasses. It would be in 1839 Undertaker gave up the Grim Reaper business. *At that time, Claudia would be nine years old.

Back to Claudia's timeline. I believe the Phantomhive surname wasn't very well known, during the 1830s and before. The only few people who would know the Phantomhive name, would be the ruling monarch and a few selected noblemen. Somewhat like the Hellsing surname.

To do some comparison:

In the OVA anime and manga of Hellsing. The Hellsing surname isn't well known to the public, because it's a secret organization which deals with supernatural beings. Just like the Phantomhive that deal with the underground criminals.

So the Earl of Phantomhive would have had to live his life in secretary. Just like the Van Hellsing/Hellsing, but still service the Queen or King as noblemen or knights.

Now I could be making this up or it's a communing thing to saying that;

"All Phantomhive who claim the title of Watch Dog, die young."

This could mean that Claudia's father, the previous Earl of Phantomhive might have passed away too early to have a son.

Skipping from 1836 to 1848, Claudia would be eighteen years old. *I could have stopped at sixteen or something, but I thought eighteen would be for the best for now.

Since the death of her father, and having no male heir. Claudia would've had to wear the title as Watch Dog to protect London's underground. *This where things get interesting.

Undertaker now retire since 1836. Would have already taken the time to establish a small shop in a shady parts of London, as Mortician. This would give him opportunity to try to set a new life for himself, and a new identity. Meaning he would have access to practice on corpses whether they were murdered, an accidents accrued or people drop dead because they are deprived from starvation. *I wouldn't be surprise if he had few skeletons in the closet or picked them off the street.

Now, notice how I didn't say if Claudia's father did know of the Undertaker. That could be scepticism, if her father did knew of Undertaker for a short while. *Hell, I could say that Claudia's father was the first one to make Undertaker laugh so hard randomly, because Claudia's father was a funny guy with jokes and stories.

We don't know if Undertaker use to take money before, maybe he did. Once.

For now, Claudia would have make her own path as the Watch Dog. So if Claudia did met with many noble before her time of duty as Watch Dog, she could have assemble a new order of the Evil Noblemen or Aristocrats of Evil, attend social gatherings, have secret meetings, and probably enough time to meet and even get more intimate Undertaker.

Which takes up to 1851.

Vincent Phantomhive is born.

Now, this is where things will probably get tricky for Claudia Phantomhive. She twenty-one years old, is unmarried. She gave birth to a child out of wedlock. And nobody would know who the father is.

How does she solve this without ruining her reputation as noblewoman and Phantomhive?

She adopts a child. Of course!

Okay, if you get this. It would mean that Claudia had to renounce Vincent not being her son and instead adopted him. Still she get to cuddle him and raise him as her own.

BACK TO FAMILY TREE

Claudia Phantomhive Cedric K. Ros-

B: 5 April 1830 B: 25 March

D: 13 July D: 28 January

Vincent Phantomhive…

And so forth…

This would mean Claudia's fierce and beautiful daughter Francis must have adopted, and I believe, Francis was older than Vincent as she must already be in her mid-thirties, because she has a stern wrinkle close her stern looking eyes. *Or she younger and she always stressed…I don't know, also we aren't given a birth date.

This can also cover-up for Undertaker for fathering a half-reaper child. We don't know for sure if it's forbidden for reaper to have child, even though most of the reapers we see are male. Can't be for sure if any of them are sterile.

By this time skipping to 1866. Claudia passed away, most likely cause of her connection to the underworld and the enemies she made.

Side note: This could be the start of Undertaker first breaking point. He just now lost the love of his life, and now their son must take up the mantle of the Queen Watch Dog.

At this point I myself would say this could be the time when Undertaker stop taking the Queen's money. As he would've believe it was the Queen's fault, who took Claudia away from Undertaker.

All righty then, it's time for the big question.

How is the Undertaker, Vincent's father? *Beside that whole paragraph above this one.

In the Emerald Witch Arc.

Two German Shinigami, point out that Ciel can see them, and they say "He's either close to death, or it because of his lineages." This could mean in Germany it rare but not common for Shinigami to have mated with Humans. Or They could be saying Ciel ancestors could have the gift to see the undead, ghost and other paranormal things...we don't know.

Also, we can add Undertaker carries mourning lockets, one holding Claudia's name. He cries after looking at Vincent and Dietrich old school photo. Sebastian even said, "Maybe Undertaker doesn't wish to harm you." To Ciel.

There also those two pages were Undertaker give a strange liquid to Ciel early in the morning.

*Who know what the hell that was? I can joke that it was medicine and Ciel was getting sick, so Undertaker wanted to feel like a grandfather helping his grandson with his health.

Or it was some kind of serum he was created to protect Ciel from any Bizarre Dolls that could attack him since Bizarre Dolls attack people to get a human souls. Meaning Undertaker must have created more of them or…two of them.

In the School Arc.

We already learn that the Bizarre Dolls are evolving so, Undertaker could be getting close to archiving his goal…Whatever that might be. Right now I'm guessing.

Anyways. In the Anime, for Book of Circus. We get another color scheme of Vincent Phantomhive.

When I was looking into Vincent's soft and calm eyes. I noticed they had a hint of gold. That could be describe as a honey which is a rare eye color is the real would.

To get all genetic on you with Biology.

Brown eyes are the most dominate color eyes in the world. And honey eye colors are rare which I learned in the World's Most Beautiful Eyes video I watched on YouTube.

So should…Cedric K. Ros- had sex with Claudia. It could be possible they can give birth to a rare eye color child with midnight hair and porcelain skin.

Since Shinigami eyes colors are a mix "glimmer" of Green and Yellow. The chances of Vincent having those eye are "NONE." "ZIP"

You would need two light eye colors to make a light eyed child.

So mixing with the dominate trait, eye color Brown with Green, Brown will obviously beats the Green eye color, but because Yellow is a lighter brown like orange is. The two colors could have blend together and not cross. This give the chance of gold or honey, which is still brown but a bit lighter than the norm.

Also, when I look at Vincent in the anime and parts of the Manga, some expression do remain me of Undertaker/Cedric. And both Undertaker and Vincent are tall and slim built men. They also seem to have away with words and expression. Most of Vincent looking traits come from his mother, with the eyes form and hair. Also Vincent must have been quite the devil…get it. Because he's part of the The Devil Six…. And Undertaker does try and hope to revive Vincent with rank three :P

So there you go! Undertaker is Cedric K. Ros-…and he must already have prefect the bizarre dolls ready in some way. Because I swear, if he doesn't get any closer I will cry for the man, harder than I cried for Grimmer in Monster…

QUESTIONs AT COULD BE ANSWER:

Q. What about the Funtom Company?

A: The Funtom Company wasn't establish until Ciel created it. He's the founder and owner of the company itself. Vincent didn't own or created Funtom Company. Vincent was most likely a benefactor and charitable man as it was claimed he invited orphans to his estate for Guy Foxe Day, and Christmas.

*Side Note: It could mean he also knows that Frances isn't his sister, and wants to care for the Orphanage hoping a better life for all children. In London

Q. When was Frances born?

A. It doesn't say. But I can guess she 35…Vincent would be 38 if he was still alive. Claudia would be 59 and if she's luck like Integra Hellsing is at 52 to still be middle age with mature beauty. Then fine by me, Cedric and still go for that xD

TIMELINE:

1830 - Claudia Phantomhive is born

1839 - Cedric retire or deserts the Grim Reaper business...Probably by using force because of the scars

Between 1847 and 1848 - Claudia Phantomhive in either 17 or 18 to pick up the mantle of being the New Watch Ground for London's Underground

Between 1839 and 1849 - During 10 years, Cedric would have had time to created a new identity as the Undertaker. Meaning he had plenty of time to practice on dead bodies.

Between 1848 to 1850 - Claudia created the Evil Noblemen or Aristocrats of Evil.

Between 1848 to 1850 - Claudia and Undertaker relationship could have escalated to an intimated relationship

1851 - Vincent Phantomhive is born.

Somewhere in year before Claudia's death. Claudia adopted Francis.

1866 - Claudia passed away. Theories of to how she died is stilled ponder

1867 -Vincent takes up the duty as Watch Dog.

In the early and mid years of 1870 - Vincent meets the Durless daughters. Rachel and Angelina. Vincent marries Rachel.

1875 - Ciel Phantomhive is born

1885 - Vincent still uphold secret and seemingly causal gathering with new members of Claudia Evil Noblemen.

1885 - Vincent and his wife are killed. Ciel goes missing

1885 - Ciel is to be sacrifice, but summons a demon.

1886 - Ciel has Sebastian train him to be a Noble, while Ciel trains Sebastian to be a Butler.

1886 - The Funtom Company is establish

1886 - Ciel is the new Watch Dog for the queen.

1889 - Undertaker states its been 50 years since he was last called a Shinigami or Grim Reaper

IF you can think of other questions, please review them and hopefully other will read the review and answer the question for me.