He was the son of John and Letitia Mathers. In 1901 the family lived in house 11, Ballymaglare North, Ballynahinch, Co. Down. They were still there in 1911.
The Belfast Banking Company 'Roll of Honour' booklet records Mathers as being a Corporal in the Black Watch. He is also described as 'previously wounded' with his last known address as 'in France'.
Mathers is recorded in the 1956 annual accounts of the Belfast Banking Company as being manager of Bushmills branch.
Retirement came in 1957.