Koorneef family photo on a birthday party of Leny Koorneef:
From top left to bottom right:
Leny Koorneef, ?, Arie Koorneef, Lucas Koorneef, Co Walinga-Koorneef, Lena Sijsma-Koorneef, ?
I'm very sorry to admit that I don't know the names of the two family members. I've to ask my mom. The photo was taken around 1990. My father (Arie Koorneef) and two aunts (Lena and Co (Jacoba) Koorneef) passed away in recent years.