Mary Spence ~1800
1799-1829 . Mary Spence married Peter Donnelly No marriage anywhere in Scotland on SP, could well have been in Ireland Or the neighbour who was the Informant on Mary Donnelly's 1901d.c. might not have known the cor rect names!!
~1828 . Mary Donnelly was born Glasgow( from 3 censuses, Neilston in another, Ireland in another!) to Peter Donnelly & Mary Spence - names from her 1901d.c.
Cannot find Peter &/ Mary Donnely in 1841C or 1851C