Despite their Irish immigrant background two of his sons joined the British establishment. William Cain became a baronet while Charles Cain, later Charles Nall-Cain, entered the House of Lords in 1933 as the first Baron Brocket, joining several other brewers in what became known somewhat disparagingly as The Beerage. Both sons were noted philanthropists.
Despite their Irish roots, two of his sons rose to prominence within the British aristocracy. William Cain was ennobled and became a baronet, while Charles Cain, later known as Charles Nall-Cain, entered the House of Lords in 1933 as Baron Brocket, joining an exclusive group of brewers that earned a reputation for being part of "The Beerage." Both sons were notable philanthropists.