高祖

Noun

 * 1) great-great-grandfather paternal grandfather's paternal grandfather
 * 2) primogenitor
 * 3) remote ancestor

Proper noun

 * 1)  (256  or 247  – June 1, 195 )
 * 2)  (566 – June 25, 635)
 * 1)  (566 – June 25, 635)

Etymology
Ultimately from.

First cited in Japanese in 1120.

Noun

 * 1)  a remote ancestor
 * 2)   an ancestor four generations back: a great-great-grandparent, a grandparent of a grandparent
 * 3)   the founder of a dynasty
 * 4)   the founder of a sect