William Borthwick, 6th Lord Borthwick Peerage person ID=137568 (d. 1582) Parents John Borthwick, 5th Lord Borthwick Isobel Lindsay Children James Borthwick, 7th Lord Borthwick John Borthwick Alexander Borthwick William Borthwick William Borthwick, Master of Borthwick Siblings Isobell Borthwick Mariota Borthwick Margaret Borthwick Partners Grissel Scott