Griffiths Valuation for 1861 lists two McGookin households in Ballyalbanagh. William was farming plot 60 and Thomas plot 45. William died in 1879:
https://civilrecords.irishgenealogy.ie/churchrecords/images/deaths_returns/deaths_1879/06509/4874765.pdf William’s will is on the PRONI wills website.
By 1901 there was one Murdoch household in the townland:
John’s father was another John, a farm labourer.
Family appear to have been Presbyterian (so likely Scottish origins). If your family were also Presbyterian then you might want to check the Presbyterian church records around Ballyalbanagh for baptisms and marriages. Possible churches would include Ballyeastion (1st & 2nd), Ballynure, Raloo & perhaps Donegore. Copies of their records are held in PRONI in Belfast. If you are unable to go yourself, you could employ a researcher. Researchers in the PRONI area: http://sgni.net