Disclaimer: I don't own the Percy Jackson books.
Children of the Great.
Prologue
Percy stared at the two children in his wife Annabeth's arms. The boy had blond hair like his mothers and green eyes like his fathers, while the girl had black hair like her fathers and grey eyes like her mothers. Annabeth looked up from her children at Percy.
"You know we still haven't named them, Seaweed Brain."
"How about Luke and Silena for the friends we lost on THAT day." They both stared at the ground until Annabeth looked up and said, "Why would our cute little girl want to be named Luke