Harry Potter and the Goblet of Fire (2005) - Movie stills and photos
Myrtle (b. 1929 – 13 June, 1943), more commonly known as "Moaning Myrtle", was a Muggle-born witch who attended Hogwarts School of Witchcraft and Wizardry from 1940 – 1943 and was sorted into Ravenclaw house. She was killed in 1943 by Salazar Slytherin's Basilisk, under Lord Voldemort's (Tom Riddle) orders. Now, she is a ghost who haunts the first-floor girls' bathroom (and occasionally other bathroom facilities) at Hogwarts. - Harry Potter Wiki
Moaning Myrtle was not 11 when she died. I believe she was 13 or 14. Also, Shirley Henderson was not 45 years old but in her thirties when CoS and GoF were filmed. I like that people create "fun facts" stuff about HP, but I really wish people would make sure the info is correct first.