In 1830, doing a US Census search on Ancestry, you can’t find Charles Myers Sr, but you can find Charles Marwer. Looking at the actual census page, it’s easy to see that Charles Marwer is actually Charles Myers Sr. Further down the page, you can also see Charles Myers Jr, though his name has been butchered in ways I can’t entirely figure out.
On the image above, Charles Myers Jr is the lowest of the rows, while Charles Sr is about third from the top. There are three women with Jr, and while we know the name of the son, (William Hill Myers, buried in Cass County along with Jr and Sr), I do not know the name of Charles’s three daughters.
Of the two men with Charles Sr, the younger is Elias, and the older is undoubtedly an apprentice.