Literature from that time has a description that Juro was referred to as 'Soryo no Fujiwaka (heir of Fujiwaka), Kanze dayu,' and shows that this Juro was regarded as a main branch of the Kanze family by Kofuku-ji Temple which was a traditional patron of four Sarugaku performance groups in the Yamato Province, and also succeeded to 'Fujiwaka,' a childhood name of his grandfather, Zeami.
また当時の文献に十郎を指して「惣領ノ藤若観世大夫」という文言が見え、大和四座の伝統的な後援者である興福寺がこの十郎を観世家の嫡流と見做していたこと、また十郎も祖父・世阿弥の幼名たる「藤若」を襲名していたことが分かる。