同姓 どうせい同名 どうめいでしょう
dōseidōmeideshō

Noun
Desu Copula
no-Adjective

Expresses probability in a polite manner ("probably…") of 同姓同名

1. Probably a namesake.; Probably someone with the same family name and given name.

Polite
Presumptive
Conjecture