siblings of Olga van Middelstum

half siblings paternal

broodmare Mieke (Shetland Pony,  , from Harry v.d. Bergdijk)

Mieke

broodmare Wilhelmina van't Sluisje (Shetland Pony, 1984, from Harry v.d. Bergdijk)

Wilhelmina van't Sluisje