Hogwarts School of Witchcraft and Wizardry is located in Great Britan - she doesn't give a specific place though.
Is he the one in blue
Dumbledore
The Potters
He is neither dead nor alive in reality - Harry Potter is a ficticious person.
The possessive form for the plural noun potters is potters'.Example: We can find some nice pieces at the potters' gallery on Second Street.
Stoke Potters was created in 1929.
The Potters Field was created in 2008.
Potters For Peace was created in 1986.
Potters Bar's population is 21,618.
Nowadays term 'alma mater' doesn't refer to a person, but a school, so it would be Hogwarts.
Harry Potter Places
Hogwarts's (Hogwarts is Harry Potter's school) motto is "Draco Dormiens Nunquam Titillandus" which means "Never tickle a sleeping dragon".