Although 'Juko-ryu kikigaki (dictation of oral narrative, or interview report about the Juko school)' shows the family tree whose founder was Kogyoku Ichijuan, one of the disciples of Juko, written by Dogen NOMOTO, who was a sadoyaku (a tea-server sustaining Japanese tea ceremony of bakufu and domains) during the Genroku period, 'Sado Juko-ryu Keifu (family tree of the Juko school of tea ceremony)' written by Bichoan SUZUKI, the tea master of almost the same period as Dogen NOMOTO, reads that the founder of the Juko school was Juko MURATA and the seventh-generation head of the school was Bichoan SUZUKI.
元禄期津軽藩の茶道役野本道玄の「珠光流聞書」には珠光の弟子である一樹庵光玉を流祖とする系図が示されているが、ほぼ同時期の宗匠である鈴木備長庵による「茶道珠光流系譜」によれば流祖は村田珠光であり備長庵は7代にあたるとされる。