Isabella of Strathearn, heiress of Caithness ¹

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Isabella married William (III) Earl of Ross, son of Hugh Earl of Ross and Matilda or Maud DE BRUS, on 28 May 1344.¹ (William (III) Earl of Ross was born about 1311 and died in 1372.)

  Marriage Notes:

"Isabella, declared by her father to be the heiress of the earldom of Caithness in a grant of her marriage on 28 May 1344 to William, Earl of Ross, her uncle."

from Scots Peerage vol 2 ¹

Isabella next married William SINCLAIR of Roslin.¹ (William SINCLAIR of Roslin was born about 1310.)

  Marriage Notes:

"She was married to Sir William Sinclair of Roslin, and her second son, Henry Sinclair, was made Earl of Orkney."

from Scots Peerage vol 2 ¹