You are probably right that George was Jacob's brother. George and Barbara Snearly were, according to the book, probably Jacob's parents,and since George was born a year before Jacob, he may have been the oldest son named after his father. The book is titled "The Family of Jacob and Catherine Snearly from Pennsylvania in 1776 to Ohio in 1816 to Illinois in 1847" The author is Marlene Snearly Wiley, address 23625 Skyview Terrace, Los Gatos, CA 95030. Her tel# was 408-353-1546 at the time the book was published in 1986. I am pretty sure that she is still at the same address because my mother ( maiden name Snearly)sends her updates every now and then.
She used to have a few copies left, but I do not know the status now. Thanks for your message.
-Pat Littell