Question

were there ever in the 1800's a miss Blackstock?

Answer 1

https://familysearch.org/ark:/61903/1:1:N54R-FV4   Mary Blackstock 1809

https://familysearch.org/ark:/61903/1:1:N54R-NLZ   Sarah Blackstock 1810

familysearch.org/ark:/61903/1:1:N5CX-G29  Elizabeth Blackstock 1813

And many more Miss Blackstock's in the 1800's. What country, county and or city are you looking at? What birth year, marriage year and death year?

Thank you.

Answer 2

There are also a lot of Blackstocks (including many Miss Blackstocks) with profiles on WikiTree:

http://www.wikitree.com/wiki/Space:Blackstock_and_Related_Families_Interest_Group

http://www.wikitree.com/wiki/Space:Blackstock_Resource_Page

http://www.wikitree.com/genealogy/Blackstock