Timeline: Helen Theresa Koch: Our Family History

UPDATED: 25 July 2026

Helen Theresa Koch

1894 - Yes, date unknown

Chart width: Refresh

Timeline

Delete

Fredericl Hartleben (1854 - )

Johanna Rudolphine Frieda Mass (1880 - )

Melchior Schneider (1886 - )

Herman Marschke (1877 - )

Helen Theresa Koch (1894 - )