Author's Note: The kernel of this story, its' inspiration comes from YouTube's BABYLIBBY96 - I loved the idea; I had had thoughts of my own swirling for a while, quite similar- and seeing this just seemed to cement them.

If you want to see the clip which inspired me: watch?v=S6E8lcNBRCw

They did say it wasn't for a fan-fic of theirs, so... I hope my little work does them justice.

Notes on the ages of the children: Cassiah Baratheon, the eldest child- Almost 17

[the ones Cersei aborted (book)/ 'lost' when very young (show), were also true Baratheons]

Joffrey's not long 16 - Myrcella, 11 - Tommen, 7

I did a bit of research to work out the timeline; Robert took the throne in 283- he and Cersei married sometime in 284, so I put Cassiah's birth in early 285. Cersei's convinced Joffrey was conceived when she (and Jaime) was with Robert, visiting his uncles on Estermont, the same year- it's unlikely that Cersei, as a noblewoman, and someone conscious of her figure, was breastfeeding- though it's not guaranteed, it has been said to act as a primitive form of birth control.

I did have the idea in my mind from the start, to make Cassiah the eldest, however, I didn't want to get schooled by someone saying it was impossible, so I actually Googled: How soon after giving birth, can you conceive again? Apparently, pretty quickly- as soon as you recover from childbed and have your next cycle.

Forgive any remaining mistakes- I am only human.

Prologue - The Baratheon Princess

When they held the newborn up for her- and she saw the jet-black birth down, Cersei swore to herself that she'd smother the babe, as soon as strength returned to her- she'd not let issue of that whoremonger who still desired a dead girl over her, live... But when the midwife then cried out in amazement, that the newborn had opened green eyes, not the blue that babies were usually born with; she couldn't help but wonder if the baby could still be hers and Jaime's- they had slept together the morn of her wedding, and despite the history of so many golden lions, Tyrion had a streak of black hair amongst his pale blond, so perhaps...

Jaime never assumed for a moment that she wasn't. "What shall you name her?"

"Joanna, perhaps? For Mother."

"Taliah- for the sister we lost," Jaime suggested.

"Cassana," slurred a third voice. It was Robert at the door- and he had dragged a good dozen strung rabbits, hares and partridges with him.

"Good hunting, Your Grace?" Jaime asked, not caring one way or the other.

"Good enough- nothing big, though."

"It could have been worse," Renly, the King's youngest brother replied mildly.

Despite despising the entire Baratheon clan, it still amazed Cersei how similar Renly looked to Robert - he was of a far slighter build, but that face… it was a face she now hated, but once- once she believed she could love him, til he had shattered the pleasant fiction so brutally- with one word...

"I'm sure it could have," Jaime replied. "New cloak, Renly? Green- excellent colour for you. The working looks to be of the Reach- I hear they do very fine."

"A name-day gift, from my foster family."

Turning back to his sister and her drunk husband, before striding over to the midwife who held the child- who was likely his, Jaime said, "What about Cassiah? Combining your late mother's name, with that of our deceased sister."

"Cassiah Baratheon," Robert repeated with a slur.

Renly added his own view, as he walked over to the Kingslayer. "There are worse names to have, brother. Princess Cassiah Baratheon," he repeated, as he ran a slender finger along her cheek and watched with bemusement as she smiled at him.

Note: There's nothing in the histories to say Joanna ever had more than the three children- nor is there anything to say she didn't. I elected to give them a short-lived sibling before Tyrion.