Mr. Grinling was a lighthouse keeper.
His cat's name is Mrs. Norris.
Keshas cat is called Mr. Peep$
gun
squeaker
Mr Bigglesworth.
The name of the cat is Jinx
he was called Mr. Jinx but they called him jinxy and jinxie cat
Mr. Fishyswim or Mr. Swimyfish or if your adventurous you can go Fimyswish
Mr Bonkers
There is no character by the name Mr Norris in the Harry Potter series. The closest is Mrs Norris, who is a cat and does not play Quidditch.
Mr. Henderson