Mechtild of Nassau German countess († 1319) (d. 1319) Parents Agnes of Leiningen Otto I of Nassau Children Heinrich von Schönecken Margareta von Schönecken Agnes von Schönecken Lisa von Schönecken Mechthild of Sponheim-Starkenburg Siblings Otto of Nassau Gertrud of Nassau Emicho I of Nassau-Hadamar Henry I of Nassau-Siegen John of Nassau-Dillenburg Partners Gerhard I von Schönecken