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Derek W. Johnsen (1)
X 
Rianna Arco
Adam A. Johnsen (1)
William A. Johnsen
X  X 
1 Ruth L. Langner
2 Marian o’Brien
XIII
XIV
XIV-ad ♂
Derek William Johnsen
marriage with
Rianna Arco
XIII-fi,2 ♂
Adam Arthur Johnsen
XIII-fi ♂
William Arthur Johnsen
relationships:
(1) marriage with
Ruth Louise Langner
(2) marriage with
Marian o’Brien