 Nyora kupfuurira kweiyi ndima - Akaberekerwa muIngersoll, Ontario. Pasinei norufu rwababa vake achiri muduku, Clark akakwanisa kupedza dzidzo yake pachikoro chesekondari chomunzvimbomo uye akapfuurira kupinda Victoria College. Muna 1914, akatanga kudzidza mutemo paOsgoode Hall. Mukati meHondo Yenyika I, akashanda ne96th Lake Superior Battalion uye akaona chiito paSomme, Vimy, Passchendaele, Canal du Nord uye Valenciennes. Akatangazve zvidzidzo zvake zvemutemo muna 1919, akazvinyora muPort Arthur, akadaidzwa kubhawa reOntario muna 1920 uye akapinda muchiitiko muWindsor. Muna 1930, Clark akaenda kuEngland kunotaura zvinobudirira nyaya pamberi peBritish Privy Council. 