See also
1. Sir William Sinclair of ROSLIN, son of Sir Henry Sinclair of Roslin ( -c. 1336) and Alice de Fenton ( - ), died on 25 August 1330.
Sir William Sinclair of ROSLIN had the following children:
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2. William Sinclair of Roslin, son of Sir William Sinclair of ROSLIN, died after 13 September 1358. He married Isabella of Strathearn.
Isabella of Strathearn was the daughter of Malise, 8th Earl of Strathearn, Earl of Orkney and Caithness ( - ). She and William Sinclair of Roslin had the following children:
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3. Henry Sinclair. 1st Earl of Orkney, son of William Sinclair of Roslin and Isabella of Strathearn, died in 1404. He married Florentia of Denmark?. He married Jean Halyburton.
Jean Halyburton was the daughter of John Halyburton of Dirleton ( - ). She and Henry Sinclair. 1st Earl of Orkney had the following children:
| 4 | Henry Sinclair, 2nd Earl of ORKNEY (c. 1375-1422). Henry was born circa 1375. He died in 1422. |