I'm supposing that you dont want us to check up on Cricinfo for the first one.....so I'll try my best.
Brian Lara scored his 501* for Warwickshire if I recall correctly. Against Glamorgan?
At Glamorgan in 1994.......who would be a 12th man? Hmmm, probably not Ambrose. Possibly Walsh.....I'll go Courtney Walsh.