someone with the same full name
僕たち、同姓同名なんだ。
We have the same name.
実は私が中学の頃―同じクラスに同姓同名の男子がいたんです
Actually, when I was in middle school, there was a boy in my class with the exact same name as me.
— Love Letter (1995)
同姓同名か
Do they have the same name?
私は自分と同姓同名の女性を知っている。
I know a woman who has the same name as me.