Complex sentence: In 1961 he opened his first gallery, the Bonython Art Gallery in North Adelaide, (which later became the Bonython Meadmore gallery), before moving to Sydney to open the Hungry Horse Gallery in Paddington in 1966.
Split into simpler sentences: In 1961 he opened his first gallery, the Bonython Art Gallery in North Adelaide, (which later became the Bonython Meadmore gallery). Before moving to Sydney to open the Hungry Horse Gallery in Paddington in 1966.