Hi Diane,
Ballacunner in the treen of Leodist (Andreas) was a different place to Ballacunder in Bride.
Have a look at Kneen's place names on Manx Notebook: www.isle-of-man.com/manxnotebook/fulltext/pn1925/be.htm
This has:
Ballacondyn
1515 Man. Roll Fynlo McCundre (adjoining)
1643 ,, ,, Ballacunder
'MacCundre's (now Condra and Anderson) home stead.' v. Ballacunner in Kk, Andreas.
If you go into the Search page and write Bride and the various alternative names (one at a time) under 'Search term' - all words - you should find more references to it.
You could also check Woods Atlas for property owners in 1867: www.freewebs.com/woodsatlas1867/
See: KNEALE, William, 1st Cronstal Pt. Ballacunder Bride.
Sue