The John Spence who married 7 March 1872 was a son of William Spence (mason) and Catherine Moar. He was a shoemaker, age 44 when he married and was living at Outslap, Barony, Birsay. His wife Isabella was age 38, living at Nether Stanger and her parents were George Moar and Mary Stanger. Witnesses were William Moar and Andrew Spence.
The John Spence who married 8 April 1870 was a son of Gilbert Spence and Jane Spence (nee Spence). He was a seaman/carpenter Merchant Service, age 34 from Biggings, Greeny, Birsay. His wife Isabella age 30 was living at the Free Church Manse, and her parents were James Moar and Ann Moar (nee Moar). Witnesses were William Mowat and Thomas Spence.