I don't see any marriage to a Hornbaker in any of the work on the line of Jim Beam, from his fahter David M. born 1833, married to Margaret Phillips. David and Margaret did have a son named Jacob, but he was born 1787 and married Mary Weller.
If your line is connected it might be as one of David's sibling's lines, then back to Jacob B, father of David b. 1802, who was the father of David M. b. 1833, who was the father of James (known better as Jim Beam).
David, father of David M. was married to Elizabeth Settle. They had Joseph, Jacob, Isaac, John, George and Wm., who could have carried the Beam name to your Jacob. I have little else on these siblings. His father, Johannas Boehm, also had 5 known sons, and probably Johannas had several brothers.
You might find an interactive search of the Beam List archives, followed by a post to the list to be worth the time.
You might also check the site of John Inman, who covers some of the earlier generations which included the Myers family. You never know what links you might find at such a place. I'm sorry, I didn't make a note of the addy, but I'm sure you can put his name into a search engine and find it as quickly as I email@example.com://homepages.rootsweb.net/~rosamili