Melissa Lott (January 9, 1824 - July 13, 1898) moved with her family to Nauvoo in 1842. Her father, Cornelius, managed the Smith family farm a couple of miles south of town. Melissa soon moved in with the Smiths and helped out with Joseph and Emma's children. She moved back home as a single teen.
Then, towards the end of June, 1843, Joseph sent an entourage of secret wives to convince Melissa that she needed to marry him. Eliza Snow, Elvira Holmes, Elizabeth Durfee, and Elizabeth Whitney (mother of one of Joseph's teenage wives, Sarah Ann Whitney) dropped by the Lott farm for a chat.
Nineteen-year-old Melissa was secretly married to Joseph in September. Her parents were present as Melissa and Joseph vowed to keep themselves "wholly for each other" in the capacity of husband and wife. Melissa later confirmed that she was Joseph's wife "in very deed," which is to say they had sex. She even returned to the Smith home that winter. I wonder if Emma noticed anything.
Less than year after Joseph was murdered, Melissa married again, this time to a man named John Milton Bernhisel. Three years later, now in Utah, she married Ira Jones Willes, with whom she had six children: Achsa, Stephen, Lyman, Ira, Cornelius, and Polly.
Melissa lost her husband and son Cornelius in 1863. Achsa and Stephen also died before reaching adulthood.