How did Mary Countess of Harewood die?

Answer 1

In order for the tiara to appear "tighter" as it did, for example, when HM wore it.... Since her husband Prince Albert's death, the jewels and jewelry which he ..... The Princess Mary, Princess Royal and Countess of Harewood died.

Answer 2

Mary, Countess of Harewood died on March 28, 1965, from complications related to surgery. She underwent surgery to remove a Linotype machine, used for printing, which had become embedded in her lung following a World War II bomb blast. However, the procedure resulted in a fatal infection.