11th Generation  

18. William ST. CLAIR Of Roslin ^1,2,4 (William Of Roslin (Sir)¹⁶, Henry Of Roslin (Sir)¹⁵, William (Sir)¹¹, Henri¹⁰, Henri⁹, William⁸, Henri⁷, Henri³, William 'The Seemly'², Walderne¹) was born after 1310 and died about 1358.

Known to be a minor at his father's death.

Events

Charter confirming annuity of 40 merks granted to his grandfather, 17 Jan 1356. ⁴

Charter of the lands of Morton and Merchamyston in Midlothian from King David II, 10 Feb 1357. ⁴

Safe conduct to enter England, 6 May 1358. ⁴ Whilst on his way abroad to Prussia.

William married Isabella STRATHEARN,^1,2.^,3 daughter of Malise STRATHEARN ^1,2,3 and Marjory ROSS,¹.^,2.^,3 Isabella died after 1400.

Isabella outlived her father, sisters and brothers, and after her son's death remained in the Orkneys.

Children from this marriage were:

+ 21    i. Prince Henry ST. CLAIR Lord Of Roslin, Earl Of Orkney ^1,2,4 was born in 1345 and died about 1400 in Orkney Islands, Orkney, Scotland,⁴ aged about 55.

+ 22    ii. David ST. CLAIR ^1,2.^,4

19. Margaret ST. CLAIR ^1,2,4 (William Of Roslin (Sir)¹⁶, Henry Of Roslin (Sir)¹⁵, William (Sir)¹¹, Henri¹⁰, Henri⁹, William⁸, Henri⁷, Henri³, William 'The Seemly'², Walderne¹) was born before 1330.

Y

Margaret married Thomas STEWART 2nd Earl Of Angus, Lord Of Abernethy,^1,2,4,10 son of John STEWART 1st Earl Of Angus ^1,2,10,11 and Margaret ABERNETHY,^1,2,10,11 on 3 Jun 1353 in Papal Dispensation Granted ^6,10.^,11.^,12.^,13 Thomas was born about 1329 and died in 1361 in Dunbarton Castle,^4,11,14 aged about 32. The cause of his death was Plague.

Said to be related "in the fourth degree".

Arrested for alleged complicity in the murder of Catharine Mortimer and imprisoned at Dumbarton, where he died of the plague. Catherine Mortimer was, at the time, the mistress of King David II.

Children from this marriage were:

+ 23    i. Thomas STEWART 3rd Earl Of Angus ^1,2,11 died in 1377.¹¹

+ 24    ii. Margaret STEWART Countess Of Angus & Mar ^1,2,11 was born about 1353 and died in 1417,¹¹ aged about 64.

+ 25    iii. Elizabeth STEWART ^1,2.^,11

+ 26    iv. William STEWART ¹.^,2

Margaret next married Sir John ST. CLAIR Of Herdmanston ¹.^,2.^,4.^,15 John died after 1377.

Known to be cousin to William, Earl of Douglas and Mar. The Scots Peerage incorrectly records his name as William under the records of the Earl of Angus (his wife's 1st husband).

Events

Had a charter of Herdmanston in free blanch for a pair of gilt spurs from his cousin William, Earl of Douglas and Mar, 17 Jun 1377. ¹⁵

20. Thomas ST. CLAIR Bailie Of Orkney ^1,2,4 (William Of Roslin (Sir)¹⁶, Henry Of Roslin (Sir)¹⁵, William (Sir)¹¹, Henri¹⁰, Henri⁹, William⁸, Henri⁷, Henri³, William 'The Seemly'², Walderne¹) was born before 1330 and died before 1 Nov 1371.⁴

First online edition published by © Gary Ian Patton, 1992, revised in 2004, 2007, 2009 2017. Current edition 2024. All rights reserved.