同姓 どうせい同名 どうめいじゃなかったです
dōseidōmeijanakattadesu

Noun
Desu Copula
no-Adjective

The polite, past negative form of 同姓同名

1. Wasn't the same family name and given name.; Didn't have the same name.

Past/Perfective
Negative
Polite
Casual Register