John Sinclair, 1st Baron Pentland

Scottish Liberal Party politician, soldier, peer, administrator (1860–1925)

Parents

• Agnes Learmonth
• George Sinclair

Children

• Margaret Ishbel Sinclair
• Henry Sinclair, 2nd Baron Pentland

Siblings

• George Henry Sinclair
• Charles George Sinclair

Partners

• Marjorie Sinclair, Baroness Pentland