Todd Compton argues Lucinda Pendleton was married to Joseph in 1838.
Todd Compton, In Sacred Lonliness: The Plural Wives of Joseph Smith (Salt Lake City, UT: Signature Books, 1997), 49
There is no firm date for Smith's marriage to Lucinda, but these two months are a good possibility. He often married women while he was living in the same house with them, and the Sarah Pratt statement correlates with the year 1838, as well. Smith was thirty-two at the time and Lucinda was thirty-six, so he was the first of her husbands who was not an older man. George Harris may have given permission for the marriage, since he was a close friend of Smith and a church leader. He later stood proxy for Smith in the Nauvoo temple as his wife was sealed to the dead prophet for eternity. Despite the prophet's connection to Lucinda, she would not stop living with George, as was customary in Smith's polyandrous marriages.