Gersuinda (also Gersvinda, Gervinda; died after 800). Gersuinda was a concubine of the emperor Charlemagne, with whom he was in a relationship after the death of his last legitimate wife, Luitgard (died June 4, 800). According to Charlemagne's contemporary biographer, Einhard, Gersuinda was a Saxon, a people whom Charlemagne subdued over a thirty year period.