George Donahue is William F. Donahue's son by Elizabeth Mynhier.

Dena Donahue Greene is William F. Donahue and Elizabeth Hyatt's daughter.

Aurel Donahue is George's daughter by Martha T.Hyatt(Martha (Mattie) was a sister to Elizabeth Hyatt).

George married his father's wife's(step-mother's) sister.

Elizabeth Mynhier and George Mynhier were brother and sister.

After they died, their spouses married one another.