高祖 こうそ頭巾 ずきんなら
gokōsozukinnara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of 御高祖頭巾

1. If/when it's my great-great-grandfather's headwrap; If/when it comes to my great-great-grandfather's headwrap

Nara Conditional