August Friedrich Wilhelm EGGERT, 1817-
Berthold's first cousin twice removed

 Father Martin Friedrich EGGERT, ca 1789-
 Mother Louisa PARPART Eggert, ca 1791-1848
       August Friedrich Wilhelm EGGERT, 1817-
       Sister Friederike Louise EGGERT, 1821-
       Sister Caroline Auguste EGGERT, 1826-
       Sister Ernestine Louise Charlotte EGGERT, 1829-

Time Line

21 MAY 1817 - Born at #183, Treptow, Kr Greifenberg, Pommern

26 MAY 1817 - Baptized there. Godparents were Joachim PARPART, Carl Friederich Lange and Dorothea Regine Eggert

30 NOV 1821, age 4 - Sister Friederike Louise EGGERT born at #183 there