Situated off Spamount Street in the New Lodge area.
"Francis Lepper and his brother Charles founded the "Lodge Mill", a cotton manufacturing concern in 1811, Francis built "Trainfield House" in 1824, and lived in it until his death in 1847*. It continued in the occupation of the Lepper family until 1866. The Rev, John Macnaughtan, M.A., minister of the Third Rosemary Street, occupied it for a year or two, until it was acquired by Joseph Bigger, chairman of the Ulster Bank, and father of the more widely known Joseph Gillis Biggar, the famous Home Rule M.P, and Parnell’s most trusted lieutenant. Joseph, M.P. retained "Trainfield" for some years after his father's death, but it was eventually sold to the War Office in 1883. It is now the Headquarters of the North of Ireland District, Its name is more permanently preserved in Trainfield Street". (John J. Marshall, Belfast Telegraph, 17/02/1941).
The house was named Trainfield from its proximity to a military parade ground.