Likely related to Germanic names like Herman, meaning army man, with a feminine Spanish-style ending.
Hermanda is likely related to Germanic names like Herman, meaning army man, but reshaped with a feminine Spanish-style ending. That kind of adaptation is common in naming traditions where older masculine roots are refashioned into new feminine forms.
Hermanda has a firm, dignified sound that keeps the strength of its root visible. At the same time, the ending gives it a smoother and more ornamental feel than the original Germanic source. The result is a name that sounds sturdy, distinctive, and culturally layered.