William George Geary Loses a Father and a Son IN Battle

WILLIAM GEORGE GEARY lost his father, (Joseph Geary b.1845) - when he was 3 years old in 1868 - during a battle with Titokowaru at Te Ngutu O Te Manu, Taranaki, New Zealand.
Joseph was 23 years old at the time and married to Charlotte Fawcett - she died 7 years later in Wellington, aged 30.
48 years later, in 1916, his son (William b.1896) so also killed in action - in France during World War 1, aged 19
I would appreciate any information on their wives and family that you could give me