William Borthwick, 1st Lord Borthwick

Scottish peer and ambassador (1413–1483)

Parents

• Beatrice Sinclair
• Sir William Borthwick of that ilk

Children

• William Borthwick, 2nd Lord Borthwick
• John Borthwick, 1st of Crookston
• James Borthwick
• Agnes Borthwick
• Sir Thomas Borthwick
• Alexander Borthwick
• Margaret Borthwick

Siblings

• Janet Borthwick

Partners

• Mariota Hoppringle