Their fourth child , Agnes , married General Sir James Campbell of Inverneill .
One of his infant children is buried in the churchyard in Kirkheaton , Northumberland , and the gravestone is Grade II listed .
infant children 's fourth child , Agnes , married General Sir James Campbell of Inverneill .
One of his infant children is buried in the churchyard in Kirkheaton , Northumberland , and the gravestone is Grade II listed .