The Tyler DNA Project is open worldwide to all families with variants of this surname who are interested in working together to find their common heritage through sharing of information and DNA testing. yDNA tests paternal lineage mtDNA tests maternal lineage FamilyFinder (autosomnalDNA) tests relatedness across gender lines down to 3rd-4th cousins - best when used with family tree research. (Please advise other spelling variants to the Project Administrator.)