See if you can locate a copy of "The History of Ballymacelligott and
People", published 1997 by Ballymacelligott
Active Retirement Association, Printed by Kingdom Printers. (Paperback, 156
pages). My copy was brought back
from Ireland by a relative - there's no ISBN listed on it.
On page 13 is a somewhat rambling article "McElligott's Castle"
to Fr. John O'Donovan (1841), which
begins: "In the centre of the townland of Arabella in this parish are the
ruins of a castle called McElligott's Castle.
Nothing remains of it at present, but traces of a foundation and a portion
of one wall, thirty feet in length and
about twelve feet in height at the south east corner."
It seems the castle was wrecked by Oliver Cromwell & Co.