Sadie Lederer
From Tardis Wiki, the free Doctor Who reference
Sadie Lederer was a student at Coal Hill School. In March–April 1963, she was in Year One, three years behind Susan Foreman. During the unseasonable cold, Gillian Roberts helped Sadie make a snowman. When Francis Minto lopped the snowman's head off with a cricket bat, Sadie cried.
