Ok here a O’Brien Mystery for you all. She was born Sarah Hood we believe and Married a O’Brien I missing her other husband in all research done never heard just she was married Twice.
http://www.genealogy.com/ftm/g/e/o/Tia-George-MD/WEBSITE-0001/UHP-0...
John married Sarah Ann Richards in Ann Arundel County MD December 23, 1779. Sarah was born in Hartford County MD about 1760 and died there before 1793. John married Sarah Hood O'Brien in Hartford County about 1798. Sarah was born in Hartford County about 1770 and was apparently a widow. She died in Lewis County after the 1830 census.
https://hackerscreek.com/norman/JARVIS/JOHN.htm