Mike Credit's DNA has been tested for genealogical purposes. It may be possible to confirm family relationships by comparing test results with Mike 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 I-P37, Ysearch Y35TF, FTDNA kit #470770
Mitochondrial DNA test-takers in the direct maternal line:
Family Tree DNA mtDNA Test Full Sequence, haplogroup H55, Mitosearch YNU94, FTDNA kit #470770
It is likely that these autosomal DNA test-takers will share DNA with Mike: