Familie: Backer-Grøndahl, Frithjof Jan / Treider, May Lillian (F21550)
Løvenskiold, Sofie Eugenie (1894-1985) 
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Backer-Grøndahl, Olam Leopold (1917-2004) |
| Backer-Grøndahl, Frithjof Jan (1914-2006)
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| Treider, May Lillian (1919- ) |
Backer-Grøndahl, Helen (1944- )  |
| Backer-Grøndahl, Lillian (1947- ) |