Namesakes
Japanese Emperors:
1 emperor
Emperor Nagahito (a.k.a. Sai) 1655-1663 
Nobel Prize Winners:
1 literature
(literature) Pearl S. Buck (a.k.a. Sai) 1938
Notable Athletes:
1 soccer
(soccer) Sai van Wermeskerken 1994-
Notable Writers:
1 author
Pearl S. Buck (a.k.a. Sai) 1892-1973
Pulitzer Award Winners:
1 literature
(literature) Pearl S. Buck (a.k.a. Sai) 1932 The Good Earth