Thanks for that astute answer. My family discovered that book and have copies of pages relating to Edwin and his oldest son, Thomas.
The references to George Robinson and to Ezekial Gilman Robinson has had me perusing both men and families with a "fine toothed comb" several times. One of my cousins has an exact 67 marker Y-DNA match to two men whose genealogy goes back to Wm Robinson of Dorchester, MA and I have gone up and down every branch of his descendants with no success. My first cousin and I went to Glastonbury, Hartford and Rhode Island in 2005 and visited libraries, court houses, genealogy societies, and cemeteries in the time we were there, guided with the help of someone else who is in the lineage, but not a cousin. We thought we had hit paydirt in Providence, RI when we discovered that a Ruth Gardiner Robinson (widow of John) had died and probate document showed her children, one named Edwin, b 1812 an another son, Albert, b ~1810 along with daughters. Family lore had mention that Edwin had a brother named Albert or Alfred, but nothing much else. We claimed them and felt we had broken down the wall, that is until we returned home and discovered that "Edwin" was in S Carolina (census records) with a family at the same time our Edwin was at home in Jasper Co. MS. This all inspired me to write an article for one of the genealogy newsletters about barking up the wrong family tree. At least we had a good trip and could laugh about it!
Thanks for your help,