Gavin? My fiance’s name is also Gavin and I translated his name for him as ガビン. So many different ways to spell it!
My name is Hannah, but I’ve gone by both ハンナ and はな. I’ve been tempted to use Kanji recently… I’d probably do 華子 [はなこ]. It’s pretty and simple, and also the name of Ash Ketchum’s mom in Japanese Pokemon!