1782 Jean 1783 Alexander 1784 John 17 Robert 1795 *Peter 1798 (my line) Rebecca Lindsay 17 August 1822 Bonhill parish.
The Montrose family use it as a deer park, where they keep 200 fallow deer.
The ruins of the castle, formerly belonging to the Lennox family, are still upon this Island.
If Margaret is eldest daughter mother is possibly Margaret.
Campbell for Greenock seems no birth records/marriage records OPR which fit.
It is likely that Peter Ewing died prior to the 1851 census, while Elizabeth died 8/10/1863.