It may be possible to confirm family relationships by comparing test results with Paul 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 500 markers, haplogroup R-S25783, FTDNA kit #529411
Mitochondrial DNA test-takers in the direct maternal line:
Family Tree DNA mtDNA Test HVR1 and HVR2, haplogroup T2a1a2, FTDNA kit #529411
It is likely that these autosomal DNA test-takers will share DNA with Paul: