sorry - misunderstood you

John looks to be son of Gilbert
there is a marriage contract Old Mal Bun2 85 for Wm Clague + Margt Kennaugh in 1716 Gilbt's wife was noted as Maryad
There was a Mariot Kenniagh als Qualtro bur Malew Mal 17350323 with will d 22 mar 1734/5;son john (+wife),wm;dau margt(youngest dau dorothy);son-i-law thos fargher exec[m Alice Mal 17291202]
Children of Gilbt found from 1791 but marriage in 1688 of Mariot Qualtrough was to a Wm Kennaugh ? error somewhere