I have some information on a Elizabeth Robbins born 1812 to 1852. She died in Missouri. She was married to Edward Pyburn, born 1801 to 1852. He died on the Oregon Trail. They had 8 children. She had a sister named Rachel who married Edwards brother, Amon Pyburn II. There is no information on her parents. I am a descent of the Pyburn family. Hope this helps.
Thanks, Claire