Maria van Loon en Chiny Peerage person ID=589722 (b. 1275) Parents Arnold V, Count of Loon Margaretha von Sponheim-Vianden Children Johanna von der Mark Richarde von der Mark Siblings Mechtild van Loon en Chiny Vrouwe van Vogelsanck Louis IV of Loon Partners Eberhard I, Count of the Mark