Thanks to you all, I have seen this site before and found a couple of my Wilcoxons around Chester.
I guess as far back as 1700s it`s going to be pretty difficult to pinpoint them.
I have found some very similer place names on the Tithe, problem is on the wills, it only says *** Wilcoxon of Manley / Alvanley/ Onston / Acton etc. and the names are places they bequeathed.
The Manley / Alvanley are definiately my line. I very much doubt if a dwelling would still be standing after all these years, probably a pile of rubble somewhere in a field, but when my line moved to Denbs about 1770, they went to Cornish Hall, Holt, built in the 1600 s, and thats still there and lived in today as a working dairy farm.
Thanks again.