1970 Press Photo Princess Margaret's son Lord Linley and daughter Lady Sarah

Lord Linley, son of Britain's Princess Margaret, who placed under Scotland Yard guard after an informer's warning that there was a plot to kidnap him, gets close with his kid sister, Lady Sarah. She'll celebrate her sixth birthday Friday. Lord Linley will be nine in November. The photo was taken by their father, the Earl of Snowdon.

Photo is dated 1970.

Photo measures 9.5 x 8.25 inches.