The proposed relationship of Frederick Walter Roberts as the father of RR and Arnold Roberts is supported by DNA evidence indicating shared ancestry within the family lines.

Specifically, DNA evidence confirms a distant cousin relationship between JR (a descendant of the RR ancestral line) and DG (a descendant of the Arnold Roberts ancestral line) with a shared segment of 320.01 cM across 16 HIR segments.

This match is consistent with their placement within these shared ancestral branches.