The proposed relationship of Wilhelmine Ernestine Grade as the mother of Otto Gustav Radke, Lydia Drefs, Emilie Radke and Gustav Radke is supported by DNA evidence indicating shared ancestry within the family lines.

Specifically, DNA evidence confirms a 3rd cousin, once removed relationship between SK (a descendant of the Lydia Drefs ancestral line) and JR (a descendant of the Otto Gustav Radke ancestral line) with a shared segment of 59.52 cM across 2 HIR segments.

It also confirms a 2nd cousin, once removed relationship between GP2 (a descendant of the Emilie Radke ancestral line) and LK (a descendant of the Otto Gustav Radke ancestral line) with a shared segment of 215.96 cM across 9 HIR segments.

It also confirms a 2nd cousin, twice removed relationship between JG (a descendant of the Otto Gustav Radke ancestral line) and MR2 (a descendant of the Gustav Radke ancestral line) with a shared segment of 96.55 cM across 3 HIR segments.

These matches are consistent with their placement within these shared ancestral branches.

Further support for shared ancestry within Otto Gustav Radke, Lydia Drefs, Emilie Radke and Gustav Radke is provided by an additional 5 DNA confirmed relationships among other tested descendants tracing back to these lines.

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