- Born: 26 Oct 1840, St. Breock, CON
- Marriage: Ann Key on 8 May 1871 in St. Columb District, CON
- Died: 24 Jun 1922, St. Breock, CON aged 81
- Buried: 27 Jun 1922, St. Breock, CON
Noted events in his life were:
• Occupation: Farmer of 250 acres, 1881, St. Breock, CON.
• Occupation: Farmer, 1901, Nutfield, SRY.
• Census: Retired Farmer living with Brother in Law Richard Bonney, 1911, Wadebridge, CON.
Hart married Ann Key, daughter of John Key and Elizabeth Thomas Nickell, on 8 May 1871 in St. Columb District, CON. (Ann Key was born in 1852 and died after 1911.)