Familie: Alexander, Erling / Wergeland Petersen, Ragnhild (F20010)
 | Petersen, Hans Henrik Tybring (1875-1957) 
|
Wichmann, Anne Kathinka (1878- ) |
 | Wichmann Tybring-Petersen, Lorentz Joachim (1904-1975)  |
| Alexander, Erling (1900-1990) |
| Wergeland Petersen, Ragnhild (1901-1986)
|
| Alexander, Ragnhild (1936-2003) |