Amos Perrin, from the list of Edward's children, and his sister, Sarah, minors in 1849, were court-appointed wards of Edward's brother, Eli. This Amos was born 1839 and was raised by Eli and his wife, Freelove (Bennett) Perrin.
Your Amos was of the same generation as Edward, b 1790-1800, and his brother Eli, b abt 1798. They may all three be brothers or Amos may be a first cousin the brothers, Edward and Eli. I, too, am working to sort them all out.