Also consider these marriages, all in Bedworth
.
Edward DEWIS to Susannah HARVEY, 1769
Edward DEWIS to Elizabeth HARRISON, 1766
Edward DEWIS to Sarah HARTOP, 1762
Also
Edward DEWIS, wid to Elizabeth EDWARDS, wid, 1793.
No baptism for Benjamin found, in fact very few Dewis baptisms.
Graham, I have silk ribbon weaver ancestors from Bedworth too. Their children were baptised in the non- conformist church, very often as older children or young adults.
This maybe the same for your family, and could explain why it is difficult to find baptisms for them.
ADDED Just noticed that Timothys daughter, Sarah was baptised in the Independent chapel in 1837, at age 5 ( as explained in my note above.)