The position of the castle was commanded by wooded hills, and it is built so near the shore that the waves dash against it in winter time. It seems to have had no outer ring of defences, and it is therefore even more wonderful how it should have been successfully defended in two sieges.
The marks of the cannonading are now covered by a heavy growth of ivy.
Michael Balfour, laird of Mountwhany in Fifeshire, began to erect the fortress in 1611, when granted the manor of Crum, under the plantation scheme of Ulster.
In 1616 he sold the property to Sir Stephen Butler, and in 1619 Nicholas Pynnar describes Crum as follows: “Upon this proportion there is a bawne of lime and stone, being 60 feet square, 12 feet high with two flankers. Within the bawne there is a house of lime and stone.”
The Rev. George Hill states that the castle was built by Butler and Balfour at great expense, so it is likely to have been added to after it changed hands.
In 1629 another inquisition describes it as “One bawne of stone and lime, containing 61 feet every way and 15 feet in height; and within the same is one castle, or capital messuage, built in like manner of lime and stone containing 22 feet each way.”
Crum was leased to Dr. James Spottiswood, Bishop of Clogher, in 1624.
It must for a short time after this have been possessed by the M’Manuses, who offered it for sale at £100 and 100 cows. Among the State Papers of 1646 is preserved Sir William Cole’s petition to the Commissioners to be advanced £160, so that he might become the purchaser. He promises to return the money if unsuccessful, and says it is the only hold the rebels have in the country and “a place of good strength.” The money appears to have been sent.
We find, however, in 1645, that it is mentioned in Bishop Spottiswood’s will, and through his daughter marrying Colonel Abraham Creichton the leasehold passed to that family.
It was afterwards converted into a perpetuity, subject to a small head rent, which was bought out by the Earl of Erne in 1810 from Brinsley, 4th Earl of Lanesborough, a descendant of Francis Butler.