- Born on April 17, 1831 in Plouagat, at château de La Ville Chevalier
- Deceased on September 22, 1892 in Guingamp, at château des Salles, at the age of 61 years
Parents
- Frédéric Ier de Kerouartz (1792 - 1847), marquis de Keroüartz, capitaine de cavalerie (chevau-légers)
- Mathilde de Quelen (1808 - 1894)
Family
- Married on January 22, 1857 in Guingamp, with Eugénie de Roquefeuil (1835 - 1859), issuing
- Frédéric II (1858 - 1930)
Eugénie (1859 - 1935)