I know I may be alittle late on this but researching my 4th ggf i found the people you mention in this post. Peleg eldred and Clark eldred are found in the greene county tax rolls in 1799-1801. I thought this was the brother to my geore but it wasnt. I know from land records that peleg moved away from coxsackie in about 1814 and sold his land to a calab eldred. This might be one of your relatives, i dont know. but it I seam to think that clark and peleg were brothers because not only did they live togeter in coxsackie at the turn of the century but then peleg is also buried with clarks children.