Comments for the name Etsuko

I think it is a lovely name. I'm using it for a story/fanfic character.

"Etsu" (at least one character for etsu, anyway) means rejoice. You could also break "etsu" up into 2 characters (1 for each syllable) and have:
"E" ("grace/beauty" or "branch" or "picture" or "cove/inlet")
"Tsu" ("by the sea")
"Ko" ("child")

With "ko" becoming less common when naming babies in Japan, some other variations are Etsumi ("mi" meaning "beautiful" or "fruit") and Etsuyo ("yo meaning "generation" or "world")