Azrael has known Agony since they had met in Tri-stone and well, the two have felt the love beginning to grow between them along with the Four Horsemen and they agreed to let the two get married. And get married they did.
After the ceremony, and after mingling with the guests for a while, Azrael and Agony disappeared to do the deed. The young demon became pregnant with a daughter that they were happy for.
And as the months came and went, Agony grew larger as the baby kept growing, along with her wings. Finally, after about nine months that seemed to fly by so fast, the local midwife helped Agony give birth to a healthy baby daughter they named Mara Marie. But there was a problem and Agony became ill to the point where not even the healers could help her. And she passed on hours after giving birth.
They buried her in Tri-Stone and Azrael was left with his infant daughter to raise on his own. But that will be quite amusing as the years come and go with Mara Marie learning about her world even though she was also born blind. But Mara has also gained the gift of the Second Sight just like the scribe, Jaramiah.
But hers is far more different than his, because she'll be able to see into both the past and into the future of those around her. "Life will be interesting with Mara Marie," murmured Azrael to War while he held his infant daughter. And they all agreed with the Archangel of death as he bustled about the room just like a worried mother hen.