Hi Mike,
Thank you for getting back to me so quickly. I did some more research tonight. I have found two different spellings. Doerr and Darr ( But the Darr spelling could be Dorr). I'm not sure which one is correct. Thank you for letting me know about the Library. I went on the website. I did find my gg grandfathers parents names and he has two brothers. I will just keep on going and checking both spellings of last names.

Thank you again for your help!

Karen