Lots of info there Trish - thank you. 'Look' is unreal! 
I need to get into it all when my granddaughter goes home. I have ordered the Took /Tuck birth cert and her marriage cert from the GRO to see if that Took was a spelling mistake, which in my heart I think it is. My whole tree has been unreal to research in the last 6 months with spelling variations. I've found, with help on here, 3 of the Salkeld g grandfathers, all Thomas, and their spellings were Sarkeld, Sawkill and Salkelo!!! Still hunting the 1818 one. You'd think Tuck would be simple!!!!! 
This site is so helpful so thanks everyone 
Hi,
I did a small amount of research for a friend on the name TUCK with great difficulty because of differing ways of spelling. If you think of documents even in our time we rarely write our own names it's the Registrar, Clergy of Enumerators (before 1911) and they would not think to ask a mere mortal how to spell TUCK bearing in mind there's not a great deal of difference when you say TOOK
I gave up my TUCK research, which also started in Norfolk, when the friend explained that among her close family many used numerous different spellings, Oh dear
