Question: Who is Theodora Kantakouzene's mother-in-law?
Sentence (from "Alexios III of Trebizond"): Alexios III was originally named John (Ιωάννης, "Iōannēs"), and took the name Alexios either in memory of his older brother who had died prematurely or of his paternal grandfather, Emperor Alexios II of Trebizond.
Relevant evidence: No