His father died in France in 1917 from wounds received in World War I. His uncles were Stephen Shepherd Allen and William Allen, and his grandfather was William Shepherd Allen.
Another son, Colonel Sir Stephen Shepherd Allen, (1882–1964) was a New Zealand lawyer, farmer, local body politician, and Mayor of Morrinsville.
•
In later life he shared his time between Woodhead Hall in England and his property Annandale near Morrinsville in New Zealand.
William Shakespeare | William Laud | Woody Allen | Allen Ginsberg | William Blake | William | William III of England | William Morris | William McKinley | William Howard Taft | William Ewart Gladstone | William the Conqueror | William S. Burroughs | William Shatner | William Faulkner | William Randolph Hearst | William Wordsworth | William Tecumseh Sherman | William Hogarth | Prince William, Duke of Cambridge | William Penn | William Jennings Bryan | William Gibson | William Wilberforce | William James | William Makepeace Thackeray | Fort William | William Hanna | William Hague | William III |