The name of the orphanage is unknown. We know it was in London.
It can be speculated that the orphanage was called Stockwell Orphanage because of where he bought his diary but people only stayed at Stockwell until they were 14 and it was an all boys school but girls were mentioned to live there too.
Mrs. Cole
Wool's Orphanage
Tom Marvolo Riddle
In the room where Hagrid is it's at the end of the level Tom Riddles Diary.
Riddles originated from well they were made by "Rhind Mathematical Papyrus.
Tom Thatcher has written: 'The Riddles of Jesus in John'
Tom Riddles Mothers Ring
Basically of poverty-related health problems.
Not sure of his name but the younger Tom in the orphanage was played by Ralph Fiennes' nephew
Proffesor Dippet
He was born on the night of 31 December, 1926 at Wool's Orphanage.
Her name was Mrs. Cole.
At the orphanage where Tom lives