Family/Spouse: Isabel (of Brownhill) Cunningham. Isabel (daughter of John (of Geise And Brownhill) Cuninghame and Elizabeth (of Greenland & Ratter) Sinclair) and died. [Group Sheet] [Family Chart]

1. John Sinclair was born in 1683; and died.
2. James Sinclair
3. Katherine (Lady Dun) Sinclair
4. Daughter Sinclair

Notes:

According to "The Sinclairs of Borlum, Toftkemp, and Thura" in a chaptercalled "The Irish Scions " Chapter XIV, which came from a volume called" The Saint Clairs of the Isles". and two other sources #1 CaithnessFamily History, by John Henderson, & # 2 from the Sinclair News letterCalled GIRNIGOE, News letter of the Clan Sinclair, vol 9 April 1998.Information from Ian Sinclair of Toronto

"Possibly grandson of William Sinclair of Dunbeath to whom Brubster,Brims, Toftkemp and Thura belonged." "If of Dunreath family, he wasprobably the son of George Sinclair of Downreay."

also it says
"he may have been of the family of Murkle, and if so, or he may havebeen a brother of John Sinclair, first of Assery, and a son of JamesSinclair, first of Murkle."

Notes:

(Research):See Burke's Peerage Under "Sinclair, Bt"
William Sinclair Of Dunbeath To Whom Brubster, Brims, Toftkemp And Thura Belonged." According To From "The Sinclairs

William + Elizabeth (of Mey) Sinclair. Elizabeth (daughter of James (Sir) (1st Bt of Canisbay & Mey) Sinclair and Elizabeth (of Lindores) Leslie) died in 1772. [Group Sheet] [Family Chart]