The author did not provide that information.
Rubeus Hagrid.
it was a joke you kill joy and it was and still is scruntchy fantastico
Grawp is Hagrid's half brother if your looking for specific names- but they are just referred to as a species as 'Giants' if you mean trolls then that is something different.Trolls are not as big and less intelligent.
He does not have a middle name.
Keith's middle name is Ronald.
Aragog.
Rubeus Hagrid.
Rubeus Hagrid.
Fang :)
Fridwulfa
it was a joke you kill joy and it was and still is scruntchy fantastico
Rubeus Hagrid.
HAGRID'S name is Rubeus Hagrid.
Rubeus Hagrid is his name.
Rubeus Hagrid
A dragon. He has one in Sorcerer's Stone temporarily named Norbert.
His name is Rubeus Hagrid. I added a link to detailed information.