Prince Francis of Teck (Francis Joseph Leopold Frederick; 9 January 1870 – 22 October 1910) was the younger brother of the British queen Mary of Teck, wife of King George V. Francis Joseph Leopold Frederick, known as "Frank", was born at Kensington Palace and educated at Wellington College, Cheltenham College (Stone, 1912, p. xviii)[1] and the Royal Military College, Sandhurst.

He was expelled from Wellington College, Berkshire "for throwing his housemaster over a hedge to win a bet.

According to Julia P. Gelardi's Born to Rule, Prince Francis was vigorously pursued by Princess Maud of Wales, his sister's sister-in-law.

To recover these family heirlooms, Francis's sister, Queen Mary, negotiated with Lady Kilmorey to buy back the emeralds, reportedly paying her £10,000 for them.

In 1902 he again visited South Africa, and following the end of hostilities returned to England in June that year on board the SS Kinfauns Castle.