World of HYDE
Discovering our Ancestors and their descendants to all parts of the world. Last updated 15th March 2026.
Family: John Sinclair, Of Dunglass / Katherine Strathearn (F47035)
m. Abt 1230
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Male
John Sinclair, Of Dunglass
Birth Abt 1194 Dunotter, Kincardineshire, Scotland 
Death 1270 Inchmahome Island, Loch Rusky, Stirling, Scotland Burial 1270 Inchmahome Priory, Aberfoyle, Stirling, Scotland Marriage Abt 1230 Scotland Father Henry Sinclair, 5th Baron Of Roslin | F61924 Group Sheet Mother Rosabel Foreith, Of Strathearn | F61924 Group Sheet
Female
Katherine Strathearn
Birth 1197 Strathearn, Perthshire, Scotland Death 1286 Dunglass, Scottish Borders, Scotland Burial 1286 Inchmahome Priory, Aberfoyle, Stirlingshire, Scotland Other Spouse Henry Sinclair, 2nd Baron Of Roslin | F62692 Marriage Bef 1214 Roslin, Midlothian, Scotland Father Robert Graham De Strathearn, 4th Earl Of Strathearn | F27794 Group Sheet Mother Countess Matilda De Moravia - Countess Of Menteith | F27794 Group Sheet
Male
William Henri St. Clair
Birth Abt 1218 Scotland Death Abt 1271 Scotland Burial Spouse Margaret De Marr | F47050 Marriage
Female
Katherine Sinclair
Birth 1223 Roslin, Midlothian, Scotland Death 1284 Midlothian, Scotland Burial Spouse Thomas Mac Gybbeson | F40392 Marriage
Female
Lady Janet Isabel De Sinclair
Birth Jan 1232 Rosslyn Castle, Midlothian, Scotland Death 1 Feb 1271 Dunnyglass, Scotland Burial 1271 Church of Saint Peter the Deacon, Kilchrenan and Dalavich, Argyllshire, Scotland Spouse Third Chief of Clan Lamont Sir Colin Campbell, 9th Knight Of Lochawe | F40374 Marriage Abt 1250 Argyllshire, Scotland