Frederick was born in Bedfordshire, England to Charles Frederick Brockett (1857-1913) & Maria Levitt (1858-1942), both buried Karori
Margaret was born in Lower Hutt, the 8th of 8 children of James Coulter (1840-1888) & Margaret Sinclair (1850-1889) who married in Wainuiomata. Her father drowned in the Wainuiomata River when she was nearly 2 years old. Her mother died 2 years later when she was 4. Do not know who brought up the 8 children.