Rob Roy McGregor (SN 10354) known as Bob, was born in Ballarat East, attended Golden Point State School, was a single, bank clerk, aged 21 when he enlisted at Ballarat on 24th July 1915. His father was the Hon. Robert McGregor MLA. On December 31 1915 he embarked on board the Afric, arriving in Cairo on February 2 1916, where he was taken on strength from the 1st DAC as a gunner in the 4th Battery of the 2nd Field Artillery Brigade. From Egypt he embarked for France on March 26, 1916. After taking leave to England in August 1917 he returned to Belgium where he sustained a severe GSW to his foot in October. He was admitted to Queen Mary Military Hospital in England on October 4, rejoining his unit in France on April 22 1918. In October that year he was promoted to Bombardier. In May 1919 he returned to Australia on board the Soudan, arriving in Melbourne on June 29 and was discharged on August 21 1919.

His brother Charles Robert McGregor also served in the AIF and is honoured with a tree in the Avenue.