If I am looking at the correct censuses, Henry and Rebecca are living at 47 Princess Street, Chester.
It would appear that Rebecca was born Taylor, and married a Thomas Davies before marrying Henry Williams.
Note the cover address on the 1911 census form sent to them: it is being sent to Mr. H. Williams Jr. As he said his father was a Thomas, it is possible Henry is actually a Thomas Henry, and didn't use his real first name. Perhaps look for a death/burial under Thomas Henry Williams. *sigh* It's Henry's son (at 45 Princess Street that I was looking at).
The 1911 also states to list the number of living and dead children of THIS marriage, but they slipped up here, and it appears Rebecca listed all of her children from both marriages. However, if you can sort out which ones died, and find out where they are buried, with any luck Henry is buried nearby.
Just for reference:
In 1891, they have these children with them:
Henry age 6
John age 3
Rebecca age 1
Thomas Davies (stepson), age 16
James Davies (stepson) age 14
Phoebe Davies (stepdaur) age 10
In 1901, Henry has these children with him at 45 Princess St:
Rebecca age 12
Flora age 8
Grandson William Wilson, age 6
Rebecca is at 47 Princess St with children:
William Davies age 27
Thomas Davies age 25
James Davies age 23
Henry Williams age 16
John Williams age 14
In 1911, they have these children with them:
Jack Williams, age 24 (I assume this is John)
Rebecca Williams age 21
Florence Williams age 18
Edit: Welcome to Rootschat!!

Edit again! Fixed the 1901 entries, thanks to Dundee for the corrections!

And again! Struck out the 1911 paragraph; thanks to Heywood for catching that.
