I have found on the 1861 census Agnes b: 1827 Ireland and John Eaglson b: 1827 Ireland with son John b: 1852 Ireland living at 13 Albert Street, Govan, Scotland.  Unfortunately the original image is unavailable to view so I can't tell you the occupation of John senior at this stage.  They are elusive on later census images but I will continue to try.

 

I will also see if I can come up with anything for Francis and Catherine, Agnes' parents.

 

Kay