Agnes Henriette Beels van Heemstede-Van Loon Dutch art collector (1829-1902) (1829–1902) Parents Annewies van Winter Willem van Loon Children Siblings Jan Willem van Loon Hendrik Maurits Jacobus van Loon Agatha Johanna Loon Caroline Wilhelmina van Loon Henriette Agnes Insinger-Van Loon Partners Leonard Marius Beels