Source: Via Mark Carmichael Excel spreadsheet dated September 2025 re. soldiers of the 116th Battalion that served with the 18th.
Family Search: When Robert Wesley Brennan was born on 19 June 1898, in Canada, his father, Robert John Brennan, was 39 and his mother, Margaret Jane Hodgins, was 32. He lived in Halton, Ontario, Canada in 1911 and Esquesing Township, Halton, Ontario, Canada in 1931. He died on 14 May 1976, in Milton, Halton, Ontario, Canada, at the age of 77, and was buried in Glen Williams Cemetery, Halton Hills, Halton, Ontario, Canada.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 