Thanks for your suggestion.
I couldn't seem to find the will in question on the catalogue, but there are certainly other references to the family of my 10x great grandfather William Wickstead. I'll try every permutation of the surname when I have more time. It's a pity that the Cheshire catalogue does not give as much detail as that of the Somerset archives (where my Wicksteads eventually ended up).
I suspected that Henry Wickstead was not only the father of Richard Wickstead, as recorded in the 1613 Herald's Visitation, but also of William Wickstead's father, who I think was also named Wiilliam.
In the 1601 Cheshire will of Gabriel Wettenhall Richard Wickstead the elder, son of Henry, described as "cousin" was left 10s and cousins William Wickstead and Alexander Wickstead (who the supporting probate records states was William's brother), 5s. William later moved to Wrenbury, where he was buried in 1629 (Cheshire will located). in 1613 there was also a burial of William Wickstead senex, ie the elder, at Wrenbury, which is why I think William the younger's father was also William. There are references to family links between the Wrenbury Wicksteads and the Nantiwch family, but nothing is spelt out. I was hoping that Henry's will might have some of the answers!
regards
Andrew