Friends of Harry was created in 1988.
Padma and Parvarti Patil are twins, who are friends with Harry. Not close friends, though.
Harry teaches his friends how to perform the Petronis Spell and improve their defenses against Black Magic.
The Trouble with Harry was created on 1955-10-03.
Yes they are.
Harry Weinberg was created in 1959.
Harry Leland was created in 1980.
Harry Pearce was created in 2002.
Harry Hippie was created in 1972.
Harry Osborn was created in 1965.
Is Harry on the Boat was created in 1997.
Harry Bosch was created in 1992.
Harry Sacksioni was created in 2001.