Original sentence: His mother seems to have been Géza's first wife, Sophia, because Géza's Byzantine second wifewhose baptismal name is unknownreturned to her homeland after her husband's death
Edited sentence: His mother seems to have been Géza's first wife, Sophia of Looz, because Géza's Byzantine second wifewhose baptismal name is unknownreturned to her homeland after her husband's death