Holst / Holtz / Holz ancestors

Dear List Members,

I do not read German [except for a few phrases] but I watch for surnames. The following are my ancestors from Germany:

HOLZ, Catherine Dorothea b.late 1700's [she is my brick wall]
gave birth to a son out of wedlock in Mecklenburg. He was:

Heinrich Ludwig Holz b.1814 m. Sophie Friderike Marie Roehrdanz

Their children were:

Karoline Sophie Christine Holst b.1835 m. Henry Menk
August Karl Friedrich Holz b.1837 m. Anna Schroeder
Sophie Friderike Christine Holz b.1838 m. Fritz/Fred Martens
Henriette Friederike Maria Holtz b. 1840 single
Friedrich Joachim Christian Holtz b.1842 m. Maria Dorothea Henriette Ebel
Johann Hartwig Christian Holtz b. 1845 m. Minnie Keel

All of these people lived near Kambs bei Roebel, Mecklenburg which is close to the west side of Lake Muritz.
The difference in spelling of the Holtz name results from the different Pastors recording the name. I guess they spelled it the way it sounded to them. I have much information about descendants of all of these but cannot find the birthplace or parents names of
                         Catherine Dorothea Holtz.

If anyone can help me I would surely appreciate it. I have tried to read the 1819 census of the Kambs area but was unable to make it out.

Thank you for reading this far.

Phyllis Holtz Smith custom1retired@hotmail.com