When Jack was 8 months old, his mother married John London, a migrant worker of English extraction, and named the boy John Griffith London.

• 杰克才8个月时，他母亲嫁给了一个英格兰后裔的季节工人约翰 - 伦敦，孩子也就取名为约翰 - 格里费思 - 伦敦。