eddiec,
Have fun.
Also, does the following from the pre-1858 wills at PRONI have any connection to your lines?
Connor will made 25 March 1802 Proved 9 April 1802
Andrew M'Calmont of Island-Magee to son Thomas M'Calmont (pounds)4 . 4s divides his farm between daughter Mary M'Calmont son John M'Calmont & 2 sons in law James M'Neilley & John Grexson. Mentions neighbours Geargary Mans & James Lemmons
Executors John M'Calmont James Mulligan
Witnesses James Mulligan Gregory Mann
Grexson is likely Gregg.
As all the Christian names of the M'Calmonts run through my family I'm hoping to find a connection.
Keep well.
Roger