みずしげじゃなかったです
水繁蔞じゃなかったです
mizushigejanakattadesu

Noun
Desu Copula

The polite, past negative form of みずはこべ

1. Wasn't flourishing.; Wasn't thriving.

Past/Perfective
Negative
Polite
Casual Register
Usually Written in Kana