Brianda is a Spanish feminization of the Gaelic boy's name Brian. Brian, and possibly Briana, made his way to Spain during Christian religious wars, where he may have been "Briandus," which was found as early as 1282 if not earlier. It has also seen some use in Italy. Briana, used in 1590 by Edmund Spenser for The Faerie Queene, is a more common variant of Brian today, which means "high, noble." Brianda has been found in real use as early as 1487 in Spain, and 1250 in France (where Briande de Septeme was noted as the wife of Guillaume de Beauvoir) in the Regesta comitum sabaudiae. Brianda became much more common in the 1500's.
Similar-sounding Brianza is an Italian place name that could work well for place-name lovers.
Two namesakes for Brianda include Azorean (Portugal) Brianda Pereira, who became a popular heroine figure in the late 19th century and may be a mostly mythical figure associated with the Battle of Salga, and Brianda Domecq, a Spanish-Mexican writer born in 1942.
There were a mere 26 girls named Brianda in 2016 in the U.S., with no girls named Brianza.