Xu Xu: Family history of Annie Xu, Fremont CA USA. Includes descendants of Roger Chen. (X) http://familytreemaker.genealogy.com/users/x/u/xx/Annie-Xu-ca/
Xyooj Xyooj: Tracing the history of the surname or clan Xyooj (Hmong) or Xiong (English), includes family tree. (X) http://www.xyooj.com/
Xynides and Dean Xynides and Dean: Family research by Gregory Nicholas Xynides, Holyoke, Massachusetts. Includes lineage of James W Dean from Quincy, Florida. (X) http://familytreemaker.genealogy.com/users/x/y/n/Gregory-N-Xynides/
Additional
Information: Sites which concern the collected family history of individuals or related surnames, rather than either a specific surname or 
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