By 1911 the family lived at Kirkhead Rows in Hanilton parish and Hamilton Riddell was a coal miner. He married Elizabeth Rooney on 29 December 1911 at the Manse in Burnbank area of Hamilton parish. Hamilton was 22 years old, worked as a miner, and lived with his family at 16 Dykehead Row at the time of his marriage. Hamilton and Elizabeth had two known sons, Robert and Malcom Riddell.
In 1920 he rented a house in Dykehead Row from William Boyd, a tailor, for 4 pounds, 10 shillings a year. His brothers, Robert and William, also rented houses in the Rows that same year. By 1925 Hamilton rented 27 Udston Square in Hamilton for an annual rent of 3 pounds 9 shillings.
Hamilton Riddell died on 13 July 1960 at Strathclyde Hospital in Motherwell of pyonephrosis (an infection of the renal collecting system), and broncho-pneumonia. He was 70 years old at the time of his death, a retired coal miner, and lived at 17 Parks View in Hamilton before he was admitted to the hospital.
1891 Scotland Census, Parish: Hamilton; ED: 18; Page:4; Line: 3; Roll: CSSCT1891_310
1901 Scotland Census, Parish: Blantyre; ED: 1; Page: 10; Line: 12; Roll: CSSCT1901_245
1911 Scotland Census, 02/04/1911 Riddell, Robert (Census 1911 647/00 036/00 011)
1920 Scotland Valuation Rolls, 1920 Riddell, Robert (Valuation Rolls VR107 / 347 / 202)
1925 Scotland Valuation Rolls, 1925 Riddell Hamilton (Valuation Rolls VR107 / 407 / 204)
Scotland, Statutory Registrations, 1855-2013, 1889 Riddell, Hamilton McCorm (Statutory Births 647/00 0711)
Scotland, Statutory Registrations, 1855-2013, 1912 Riddell, Hamilton - Rooney, Lizzie (Statutory Marriages 647/00 0029)
Scotland, Statutory Registrations, 1855-2013, 1960 Riddell, Hamilton McCorm (Statutory Deaths 639/00 0246)