modern arthurian au: the rewrite : the orkney clan - lot arcaibh and his five sons
Modern reincarnated!Arthur writes children books about Arthuriana giving a happy ending—and is found through his books by his son Mordred, who has meanwhile been adopted by Lot along with a whole family of other abandoned boys needing a good home and a proper chance at life, raised as his own alongside his biological son Gawain.
"I don’t care about whose DNA has recombined with whose. What everything goes to hell, the people who stand by you without flinching—they are your family." — Jim Butcher, Proven Guilty