assume gregor and greggor are same family ?
a George G. ran a pub on sea front at Peel in 1837 but havnt identified the pub tho'
see http://www.ee.surrey.ac.uk/Contrib/manx/gazateer/inns/pe_pubs.htm
a Jno Gregor is in Peel 1814 census - see
http://www.ee.surrey.ac.uk/Contrib/manx/towns/peel/1814_cs.htm
maybe same john G. at Mathematical in 1780's ?
http://www.ee.surrey.ac.uk/Contrib/manx/history/educ/pe_ms1.htm

A T Gregor emigrated to hio - have photo of Mona football club with him on it - see http://www.ee.surrey.ac.uk/Contrib/manx/cd_only/exans/09_mona.htm