Hi Sadie.
My Nicholson lineage, if I'm correct, from the most recent is Annie Elizabeth Nicholson born 24th June 1890, daughter of Hannah Elizabeth Nicholson born March quarter 1864, Ecclesall Bierlow, father unknown.
Hannah was the daughter of William Nicholson, Cutler, born 1826 Sheffield and Jane Blake, born about 1829 Rotherham.
Jane's parents were Joseph Blake and Elizabeth, born about 1786, Pontefract.
I have William in the 1841, 51, 61 and 71 Census of York.
Not sure if I can help.
Thanks Darren.