Baigent's eldest son Albert died suddenly in October 1905 of an illness. His son John was part of the 29th Reinforcements Canterbury Infantry Regiment, C Company. He embarked for Glasgow on 15 August 1917 the New Zealand Shipping Company liner the "SS Ruahine" and then to France. He was killed in action on the Somme while part of the Canterbury Infantry Regiment, 2nd Battalion on 29 March 1918. His son Cyril from his second marriage died in 1923 as a result of war disabilities.