Last name Gwenno (Gwenno 
) , in the entire world, is an extremely rare cognomen. The surname Gwenno is characteristic of Northern Europe, particularly the United Kingdom, where it is an extremely rare surname. Much more prevalently, Gwenno is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gwenno | United Kingdom, South Africa, Brazil, United States, New Zealand |
Mai, Renney, Davies, George, Jarvis, Thomas, Henley, Hebert, Hopkin, Hughes, Watson, Carroll, Roberts, Gibbard, Edwards, Burrough, Rowlands, Griffith, Williams, Pritchard, Griffiths, Humphreys, Cavier, Morgan, Morris, Hywel, Puw, Haf, Wyn, Bebb, Rice, Glyn, Huws, Ford, Owen, Schat, Roberts-Jones, Crump, Parry, Lewis, Lloyd, James, Jones, Tomos, Ellis, Evans, Eynon, Healy, Brown, and Hughes-Marshall