In 1901 Thomas was living in house 58, Ballydownfine, Ballygomartin Ward, Co. Antrim with his parents and 4 brothers, James, Samuel, Hugh and George Hamilton.
Thomas would have joined the Belfast Banking Company around 1905. His father signed the Indemnity to the bank. Later on, his brother Samuel would take on the Guarantee. Various family addresses are recorded:
98 Balmoral Avenue, Belfast
51 Lisburn Road, Belfast
By 1911 Thomas is boarding in house 16, Forthill Street, Enniskillen East, Co. Fermanagh with a family with surname Hood. He is described as a Bank Clerk.
Thomas' parents are living in house 98 Balmoral Avenue, Belfast. Brothers Hugh and George Hamilton are still residing at home.
On 28th September 1912, a Thomas Mahood signed the Ulster Covenant at Enniskillen giving his address as Font Villa, Enniskillen.
In October 1914, Thomas enlisted into the Royal Irish Rifles with Service Number 15538 giving his age as 26 years and 11 months. His occupation is a Bank Clerk.
According to his Medal Index Card, Thomas served with the 10th Bn. Royal Irish Rifles and attained the rank of Quarter-Master Sergeant. His first theatre of war is recorded as France from 5th October 1915.
Whilst on leave from the 'front', Thomas married Nora Morrison, 22 at Drumballyroney Parish Church, Co. Down on 2nd December 1916.
Thomas was awarded the 1914-15 Star (rank recorded as Lance Corporal), the British War Medal and the Victory Medal (rank recorded as Colour Sergeant and CQMS).
Following his demobilisation after the Great War, Thomas returned to work eventually ending up as Manager of Portaferry branch. He also worked in Enniskillen and Rathfriland.
On 7th January 1949, the Belfast Gazette recorded Thomas Mahood of Belfast Bank House, Portaferry as being appointed as a Member of the Most Excellent Order of the British Empire (MBE). 1949 New Year's Honours list. As Honorary Secretary, Upper Ards Local Savings Committee, Co. Down.
Retirement came in 1951 and he died on 8th February 1961. PRONI records the following in their Will Calendars collection:
"Mahood, Thomas of 1 Slievemoyne Park Newcastle county Down retired bank manager died 8 February 1961 Probate Belfast 27 April to Nora Mahood the widow. Effects £1639 6s. 4d."