I want to name a character [name_u]Jamie[/name_u] [name_m]Theodore[/name_m] in a fanfiction of this (not popular) book that I love, and I named his sister [name_f]Cassandra[/name_f] [name_f]Elsinore[/name_f], and [name_f]Elsinore[/name_f] is an honor name for a character who is named [name_f]Elsie[/name_f] in the book, who is Cassandra’s paternal grandmother, and there is an established story around Cassandra’s father, whose sister is the main character of the book, but I had to make up a backstory for Cassandra’s mother, since there wasn’t very much in the book, and I want her to have had a traumatic childhood with her horrible stepfather, because I made it so her real father died when she was 8, and for her second child, a boy, I want his middle name to be an honor for her real father, so if I choose [name_u]Jamie[/name_u] [name_m]Theodore[/name_m], that means his maternal grandfather is named [name_m]Theodore[/name_m], and I think that [name_m]Theodore[/name_m] is too common for his first name!!! Also, side note: the book is set in 1924 and my fanfic would be around 1928.
What should I do?