I found on familysearch.org that Daniel Pentz died December 1819 - haven't checked that out any further.
I have found two birth dates for him:
1780 Maryland and 1792 Greene County, PA (not sure which one is correct).
Then I have the following:
Helen Johnson went out to OH, PA, MD & Washington, D.C. for research trip. She found Catherine Pentz on the 1820 Census in Baltimore City, MD. She was head of household with the children listed. Couldn't find her on the 1830 Census there. Aunt Hazel remembered that Catherine Pentz was to have married a Hawkins after Daniel's death in 1819. Not positive on this name, but it's all we've got to go on. Maybe she married him in Baltimore City after 1820. Thanks to Helen for sharing her find.
Do you need the names of Daniel and Catherine's children with dates, marriages, children?
Haven't heard that anyone has found anything so guess we are all still stuck.