Hi Ron--I have a reference to Caroline Elyea in the 1850 Census for Caledonia in Livingston County, NY (near Tompkins) on page 346. I haven't seen that census yet. My ancestor is listed on page 353/344: Garret Elyea. Garret Elyea had a brother, John, born 1819 death date unknown in my records. Garret and John's parents were:
James Elyea born 1788 in Wantage Township, Sussex Co. NJ, and died 1842-1849 at Rumsey Hill, Erin, Chemung County, NY. He married (first) Sallie Clearwater (1800-1827) about 1816 in Danby, Tompkins County, NY. Sallie was the mother of John and Garret. (All children: Peter, John, Jane, Garret, James, Maria--let me know if you want dates on these other children)
James Elyea's parents are where I get stuck. I have a Mr. Elyea and Mrs. Elyea! Mr. Elyea was born about 1750 either in the Netherlands (!) or Wantage, Sussex Co., NJ. Died at Inlet to Ithaca, Tompkins County NY. His children were: Rachel Elyea (1779-?), John Elyea (1782-1840) Oliver Elyea (1786-1860) and James Elyea (1788-1849).
(I don't think this is the John Elyea you trace back to)
I have an interesting piece of information on Mr. Elyea: "Mr. Elyea went to the store for supplies. He then proceeded to return home by a path through the woods accompanied by a small dog. Not arriving when expected, James Elyea (his son), his son-in-law Abram Elston (husband of Rachel Elyea) and John Blandfield turned out the next morning to patrol the woods. Their attention was soon attracted by the barking of a dog. Following the sound, they soon found the dog sitting upon the breast of his now dead master, his groceries lying nearby."
Mrs. Elyea died in Erin, Chemung Co. NY very unexpectedly. "She arose from her bed, walked to the fire, sat down in a chair, remaining there a few moments, arose, walked back to the bed, laid down and immediately expired."
Good luck in St. Lake City--I'll be eager to hear what you find!