Gwenna, pronounced as 'gwenda', is a name of Cornish origin. It means 'fair' or 'blessed'. Once popular in Cornwall and Brittany, it has seen renewed interest in recent years.
"Gwenna experienced popularity fluctuations over time. Post-2000, it saw a resurgence with peaks in 2005 (10), 2006 (9), and 2008 (7). The name's most prolific periods were 1954 to 1965, totaling 92 births, but popularity has been relatively stable since the 2000s."