Dewis Family History
Dewis Surname Meaning
Perhaps from Ewyas Harold or Ewyas Lacy (Herefs) with fused preposition Anglo-Norman French de. Denias and Denyas are probably misreadings of -n- for -u representing /w/ or /v/.
Dewyas and Devyas developed to Dewis and Devis and may have been confused with (2) and (3) from other origins.
Source: The Oxford Dictionary of Family Names in Britain and Ireland, 2016
