Cornelia Helena Tietz was born 24 June 1867 in den Helder, North Holland, Netherlands to Gerrit Tietz (1842-) and Sophia Johanna Vader (1844-) . She married Dirk Bakker (1863-) 2 December 1886 in Den Helder, North Holland, Netherlands.
|Offspring of Dirk Bakker and Cornelia Helena Tietz (1867-)|
|Johanna Elizabeth Bakker (1890-1989)||6 March 1890 Den Helder, Texel, North Holland, Netherlands||10 June 1989 Amsterdam, North Holland, Netherlands||Franciscus Vlietman (1892-1973)|
|Dirk Bakker (1902-1942)|
|Gerrit Bakker (-)|
|Sophie Bakker (-)|
|Cornelis Bakker (-)|