1. Robert de St. Clair of Normandy married Eleanor de Dreux.
Eleanor de Dreux, daughter of Robert II, Count of Dreux ( - ), was born in 1186. She died after April 1248. She and Robert de St. Clair of Normandy had the following children:
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2. Sir William Sinclair of Roslin, Sheriff of Edinburgh, son of Robert de St. Clair of Normandy and Eleanor de Dreux, married Amicia.
Amicia and Sir William Sinclair of Roslin, Sheriff of Edinburgh had the following children:
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3. Sir Henry Sinclair of Roslin, son of Sir William Sinclair of Roslin, Sheriff of Edinburgh and Amicia, died circa 1336. He married Alice de Fenton.
Alice de Fenton and Sir Henry Sinclair of Roslin had the following children:
| 4 | Sir William Sinclair of ROSLIN ( -1330). Sir died on 25 August 1330. |