Montague Donald Thaler was born in Ryde, Isle of Wight, Hampshire, England on 3 October 1894.
He was the son of a German father and an English mother, Andreas Thaler (b. 1858 in Bavaria) and Selina Ashmore (b. 1856 in Holywell, Huntingdonshire) who were married in Holywell in late 1884. His father first came to England in the early 1880s and worked as a hotel waiter before operating a restaurant. The couple initially settled in Ryde, Isle of Wight where they started their family.
Montague had seven siblings: Bertie Wilhelm (1885-1939), Florence (later Banfield, 1887-1916), Edward (1888-1888), Sidney Oscar (1889-1916), Winifred Schobert (1890-1929), Reginald Ludwig (1893-1963) and Ivy Rose (later Cross, 1895-1979).
Montague first appears on the 1901 census and by that time he and his family had moved from Ryde to East Ham, Essex. When the 1911 census was conducted the family were shown to have moved again, now living at 19 Royal County Hotel, Croydon, Surrey and Montage was described as a wholesale office clerk.
When he signed on to the Titanic, on 4 April 1912, Montague gave his address as 19 Station Road, West Croydon. The Titanic was his first ship and as a third class steward he could expect to earn monthly wages of £3, 15s.
Montague Thaler died in the sinking. His body, if recovered, was never identified.
His parents continued to live at 19 Station Road in Croydon; his father died on 1 August 1920 after which his mother moved to 55 Rosebery Avenue, Manor Park, London where she died on 29 November 1937.
His brother Sidney later served in the King's Royal Rifle Corps and was killed in action on 15 September 1916.