William Brian Maginess, QC (10 July 1901 – 16 April 1967) was a member of the Government of Northern Ireland, who was widely seen as a possible successor to Lord Brookeborough as Prime Minister of Northern Ireland.Born in 1901, the son of a Lisburn solicitor, he was educated at The Wallace High School and Trinity College Dublin from where he graduated with a Law degree (LLD), and was called to the Northern Irish bar in 1923.Having served in the Royal Corps of Artillery during the Second World War he entered the Parliament of Northern Ireland in 1938 when he won the Lisburn centered seat of Iveagh.