Date of Birth: 
About John Nettleship
- John Lawrence Nettleship (1 August 1939 – 12 March 2011) was a British schoolteacher who taught chemistry at Wyedean School, Gloucestershire.
- His pupils there included Joanne Rowling, whose mother worked for some time as an assistant in his department.
- He has been stated to be a major inspiration for the character of Severus Snape in Rowling's Harry Potter series of fantasy books.
Read more at Wikipedia