Hi Audrey,
I have a ggggrddad William Dolan, his son John Dolan married in 1840, so I have guesstimated John was born abut 1820+- 2 years and William Dolan would have been born 1799+-2or 3years. They lived in Manchester in 1840. I am not sure whether John and or his father William were born in Manchester or in Ireland.
If you could help with this WOW I would have a major brick wall crumble. By the way I know Johns wife was Elizabeth Merner, but I dont know William Dolan's wife.
Hope you can help, you are a real angel to help everyone so much.
Ted