The proposed relationship of Arthur Garfield Cessna as the father of
Paul Lewis Cessna and
Helen June Cessna is supported by DNA evidence indicating shared ancestry within the family lines.
Specifically, DNA evidence confirms a great aunt / uncle relationship between KC (a descendant of the Paul Lewis Cessna ancestral line) and RC (a descendant of the Helen June Cessna ancestral line) with 871.50 cM of shared DNA across 33 HIR segments.
This match is consistent with their placement within these shared ancestral branches.