John apparently used the family name "Johnsen" until he arrived in America. Then he used his father's family name "Aadsen".

Marriage #33
Married 10 Aug 1884 in Hetland parish, Rogaland
Groom: bachelor, sailor, John Johnsen,
born 1860 in Stavanger,
son of Lars John Aadsen.
Bride: Karen Talette Klausdatter Haaland
born 1863 in Haaland,
daughter of Klaus Kristiansen Haaland

Kildeinformasjon: Rogaland fylke, Hetland, Ministerialbok nr. A 5 (1869-1884), Ekteviede 1884, side 116.
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