The following data is extracted from A History of the Pioneer Families of Missouri - Warren County.
Harvey and Frederick Griswold, of Connecticut, were cousins. They emigrated to the West, and settled in (now) Warren County, Mo., at a very early date. Frederick married Rebecca Shobe, and opened the first store in Pinckney. They had no children. Harvey came to Missouri when he was only about sixteen years of age, and walked from St. Louis to Pinckney, carrying his wardrobe and all the property he possessed tied up in a cotton handkerchief. His cousin Frederick at first hired him to clerk in his store, but afterward bought a store at Marthasville, and sent him there to take charge of it. He subsequently purchased the store on his own account, and followed the mercantile business for many years, acquiring a comfortable fortune before his death. He married Mahala Shobe, a sister of Frederick Griswold's wife, and they had sixteen children, only six of whom lived to be grown, viz: Rebecca, William, Sylvanus, Prudence, Angeline, and Frederick. Mr. Griswold owned the land on which the graves of Daniel Boone and his wife were situated, and he bitterly opposed the removal of the remains, but in vain. It was his intention to erect a monument over the graves, and otherwise beautify the last resting place of the old pioneer and his wife.
Source: A History of the Pioneer Families of Missouri - Warren County