Levi Lewis allegedly quotes Martin Harris accusing Joseph Smith of attempting to seduce Eliza Winters, which is printed in the Susquehanna Register and Northern Pennsylvanian. The date of the reported seduction attempt is unknown, but would have been 1825 to 1829. The Lewis allegation is included in E. D. Howe's, Mormonism Unveiled printed later that year. It constitutes the only published accusation of sexual impropriety or polygamy against Joseph Smith in the 1830s.
[Hales, Brian C., Joseph Smith's Polygamy: History and Theology, 3 vols., Salt Lake City: Greg Kofford Books, 2013 (www.JosephSmithsPolygamy.com)]