Please see how you can confirm a collaborative online ancestry using X chromosome matching: http://www.wikitree.com/index.php?title=Special:Relationship&action=calculate&person1_name=Turner-12974&person2_name=Roberts-7085 where the relationship between me and my 5th cousin twice removed (both of us are male) are an X chromosome match.  The footnote for each parent/child relationship back to our shared ancestral couple states:   "Maternal [or Paternal as the case may be] relationship is confirmed by a 49 cM X chromosome match from 2,904,827 to 32,262,167 between Peter Roberts GEDmatch F008867 and his male fifth cousin twice removed Anonymous Turner GEDmatch F8583." Any GEDmatch user may independently verify this. Our shared X-DNA ancestors are  William Batchelor Denmark Jr. (1743 - aft. 1827) http://www.wikitree.com/wiki/Denmark-271 and Anna Moye (abt. 1740 - 1806) http://www.wikitree.com/wiki/Moye-102. We descend from different daughters of this couple.  If one of us had descended from a son then we would know that our shared X-DNA segment was actually from Anna Moye (and not William). WikiTree needs more genetic genealogists to help improve its DNA features. Sincerely, Peter Peter J. Robertshttp://www.wikitree.com/treewidget/Roberts-7085/5http://www.wikitree.com/treewidget/Roberts-7085/89#Xhttp://www.wikitree.com/genealogy/Roberts-Family-Tree-7085