SOGANOKURA-YAMADA no Ishikawamaro (unknown -649), the founder of Yamada-dera Temple, belonged to a family of the Soga clan, and SOGA no Umako, SOGA no Emishi and SOGA no Iruka were his grandfather, uncle and cousin respectively.
山田寺の開基である蘇我倉山田石川麻呂（?-649年）は蘇我氏の一族に属し、蘇我馬子は祖父、蘇我蝦夷は伯父、蘇我入鹿は従兄弟にあたる。