Hi Carol,
Sorry for the short reply, it was bed time here in Australia.
The Irish connection was through 3rd party info. I had noted that John and Maria's census returns satated the birthplace as England, although I have come across others that have denied their Irish ancestry. I had Maria on the 1841 census with her parents but couldn't find John.
My line comes from Elizabeth (1870), George Victor Withy (1897), Thomas Douglas Withy (1900).
The Deverau has stayed as a middle name in a few of this line but with an x on the end.