Gene Lang's DNA has been tested for genealogical purposes. It may be possible to confirm family relationships by comparing test results with Gene or other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
Family Tree DNA Y-DNA Test 111 markers, haplogroup J-M172, FTDNA kit #506212
Mitochondrial DNA test-takers in the direct maternal line:
Family Tree DNA mtDNA Test Full Sequence, haplogroup N1b2, FTDNA kit #506212