Princess Alice, aunt of Queen Elizabeth II and the oldest member of the British royal family, died peacefully in her sleep on Friday, Buckingham Palace said Saturday. She was 102.

A spokesman said the queen was greatly saddened by the death of her aunt. He said the queen “remembers with gratitude Princess Alice’s service to the monarchy and to the country.”

Born Lady Alice Christabel Montagu Douglas Scott on Christmas Day, 1901, the princess married Henry, duke of Gloucester – the third son of King George V and brother of the queen’s father, King George VI – in 1935. After helping to lift morale on the home front during World War II, Princess Alice moved with her husband to Australia, where the duke was governor general from 1945 to 1947.

Back in Britain, she kept a busy schedule of charitable work and official duties until she was in her 90′s. She was the second member of the royal family to reach her centenary, after the Queen Mother Elizabeth, who died in March 2002 at the age of 101.

Princess Alice and her husband had two sons – William, who died in a flying accident in 1972, and Richard, the current duke of Gloucester.

The princess’s husband died in 1974. She is survived by her son and three grandchildren – Lady Davina, Lady Rose, and Alexander, Earl of Ulster.