William Jason Maxwell Borthwick

Royal Navy officer (1910-1998) (1910–1998)

Parents

• Ruth Margery Rigby
• William Borthwick

Children

• Josephine Cleveland Borthwick
• Celia Cleveland Borthwick
• Rosalind Cleveland Borthwick
• Alister Jason Borthwick

Siblings

• Margaret Ruth Borthwick
• Brian Thomas Borthwick
• Elinor Valerie Borthwick

Partners

• Elizabeth Cleveland Elworthy