Ermesinda is feminine given names of Germanic origin, being derived from Irmin- (cf.
Irminsul and Irminones) and either -swint (strong)[1] or -sind (way or journey, e.g., military expedition).
[2] A possible original meaning is "warpath of the Irminones".
[2] The French forms are Ermesinde and Ermessende.
All forms, including Ermesind, appear in English.