Tofterå Slettemoen genealogy
Family: Jan Kalff / Miet Petronella Koomen (F6393)
m. 10 Feb 1948 | Leonardus Jacobus Koomen (1896-1945) 
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 | Theodora Hendrika van den Burg (1899-1938)
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| Aris Cornelis Koomen (1922-2001) |
| Adrianus Nicolaas Leonardus Koomen (1926-2013) |
| Nicolaas Adrianus Petrus Koomen (1927-1931) |
| Alida Theodora Elizabeth Koomen (1932-1976)  |
| Cornelis Leonardus Koomen (1935-1980) |
| Jan Kalff (1919-1986) |
| Miet Petronella Koomen (1925-2009)
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