Charles and Mary Ann had four sons:
Guy Neville Crozier (22 September 1897 - 1983) married Gladys Hansine Eberhard (6 March 1899 - 1981) in 1923. The couple settled in Palmerston North
Robert Hector Crozier (1900 - 1960) married Evelyn Alice Pascoe (13 February 1900 - 1987, Auckland) in 1925. Robert and Evelyn had five sons together and farmed in the Kaipara area. Following Robert's death Evelyn married a Mr McEvoy.
Kenneth Noel Crozier (1906 - 21 May 1967) married Elsinore Martha Crozier (9 June 1911 - 13 January 2001). Kenneth and Elsinore are buried at the Kelvin Grove Cemetery in Palmerston North. Elsinore had worked as a dressmaker. At the time of his death Kenneth was living at 481 Featherston Street, Palmerston North and his occupation at the time of death was listed as Company Director.
Ronald Charles Crozier (19 April 1910 - 18 March 1988). He never appears to have married. Ronald died in Palmerston North at the age of 77. He was cremated at Kelvin Grove Cemetery. Prior to his death, Ronald was a Grocer and lived at 26 Matamau Street, Palmerston North.