His maternal grandfather was Alexander Mactier who lived in New York and Philadelphia.[7] His paternal grandfather was David Hadden, a prominent New York Merchant who was born in Aberdeen, Scotland, and Ann (née Aspinwall) Hadden, the daughter of William Smith Aspinwall.[7][2]
In 1892, just a month before he married, Hadden was included in Ward McAllister's "Four Hundred", purported to be an index of New York's best families, published in The New York Times.[8][9] Conveniently, 400 was the number of people that could fit into Mrs. Astor's ballroom.[10]
On March 10, 1892, Hadden was married to Marie Torrance (1858–1923),[12] the daughter of Daniel Torrance and Sophia Johnson (née Vanderbilt) Torrance.[13] Marie's paternal grandfather was merchant and entrepreneur John Torrance and her maternal grandfather was Commodore Cornelius Vanderbilt. Her brother Alfred Torrance was married to Louise Anthony, whom she later divorced to marry the Torrance cousin, Frederick William Vanderbilt. Her sister Adelaide Torrance was married Meredith Howland.[14] John and Marie did not have any children.[1][15]
^United States Board of Tax Appeals (1929). Reports, Volume 10. p. 741. Retrieved 27 June 2018.
^"DIED"(PDF). The New York Times. February 9, 1931. p. 15. Retrieved 27 June 2018. HADDEN--John A., son of the late John A. and Frances Mactier Hadden, of pneumonia, on Feb. 6, in London, England.