Born in Forbes, New South Wales, on 27 February 1903, Lester Brain was the second son of an English mining engineer and manager, Austin Brain, and his Australian wife, Katie.
莱斯特·布瑞恩于 1903 年 2 月 27 日出生在新南威尔士州的福布斯，他是英国采矿工程师兼经理奥斯汀·布瑞恩和他的澳大利亚妻子凯蒂的次子。