During one of his lessons with Dumbledore.
No, Harry Potter and Tom Riddle are not brothers. However, they are distant cousins, Voldemort (Tom Riddle) to the Gaunts and Harry to the Potters, which were related families at one time. Harry's got a part of Voldemort's soul attached to his own, as well.
Marvolo Gaunt was Voldemort's grandfather.
Marvolo Gaunt is the descendent of Salazar Slytherein
2 movie Tom riddles diary and marlovo gaunts ring 7th movie Salazar slitherins locket 8th movie helga hufflepuffs cup. Rowena ravenclaws diadem. Nagini and Harry potter
tom marvolo riddle
Harry Potter's arch enemy is Lord Voldemort. Voldemort's real name is Tom Marvolo Riddle.
Marvolo Gaunt was a pure-blood wizard and descendant of Salazar Slytherin. He was the maternal grandfather of Tom Marvolo Riddle,
1. Tom Marvolo Riddle diary 2. Marvolo's ring 3. Salazar Slytherin's locket 4. Rowena Ravenclaw's cup 5. Helena Hufflepuff's diadem (tiara) 6. Nagini 7.Harry Potter
He is and always has been since he was one years old a Horcrux, do defeat voldemort he has to be dead before voldemort can be officially killed. Horcruxes: Nagini - Snake Helga Hufflepuffs cup Rowena Raeclaws diadem Salazar Slytherins pendant Marvolo Gaunts ring (resurrection stone (one of the deathly hallows)) Tom Riddles Diary Harry Potter
Albus Dumbledore did.
Tom Marvolo Riddle, aka Lord Voldemort
Harry learnt that Voldemort was related to the Gaunts and that Voldemort probably had their ring. Glad 2 help!