Joseph Timmins was born in Dublin about 1888. He married Elizabeth Mulholland on 25th December 1909 in Belfast. He worked in Belfast as a publican's assistant. He served with the Army Cyclist Corps, the Labour Corps and the Leinster Regiment. Sergeant Joseph Timmins was officially serving with the Leinster Regiment (No 1783) when he died at home in Belfast after the war was over on 29th August 1919. He was 30 years old. Sergeant Joseph Timmins is buried in Belfast (Milltown) Roman Catholic Cemetery.
The cemetery has a Cross of Sacrifice, which was first erected after the 1914-1918 war. There are 102 Commonwealth burials of the 1914-1918 war and 52 of the 1939-1945 war commemorated in this site. There are also 10 Foreign National burials. Those of the 1914-1918 whose graves are not marked by headstones are named on a Screen Wall memorial near the Cross of Sacrifice.