It may be possible to confirm family relationships by comparing test results with Raymond or other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
Mike Anderson :
Family Tree DNA Y-DNA Test 111 markers, haplogroup R-F3987, FTDNA kit #16273, MitoYDNA ID T10999[compare] +
Y-Chromosome Test 500 markers, haplogroup CTS4931