Si Wang-mu was created in 1991.
Xi wangmu is a Chinese goddess. The name is conventionally translated as "Queen Mother of the West" in English, but the article linked at the bottom of this page (under "related links") shows that the phrase wangmu probably meant something closer to "spirit mother" than "queen mother." I'd recommend "Spirit Mother of the West."
Say 'Si Si' was created in 1935.
.si was created in 1993.
Si Si Senor was created on 1930-09-21.
Ako Si... was created in 2005.
Si me recuerdas was created in 1988.
Si Agimat at si Enteng Kabisote was created on 2010-12-25.
Men si tarsil was created in 2009.
C'est si bon was created in 1949.
Si può fare was created in 1992.
Si Wilai District was created in 1988.
Zara Si Zindagi was created in 1983.