This family lived in Magheranhare townland in Parish of Ballintoy. The parentage of John is not clear, but the geography may help tiw him into one of the Cairn McCurdy families - and if this was the case then there is a fair probablity that he would be descended from Partirck of the Cairn that they talk of, although his existence has not to my knowledge been independently documented!
Regards
Shane McCurdy