John Benbow gives testimony that Joseph visited plural wife Hannah Ells at his (Benbow's) house.
John Benbow, Affidavit, August 28, 1869, Affidavits on Celestial Marriage, Book Number 1, 1869, 74, MS 3423, Church History Library
And further, that Hannah Ells Smith a wife of the Prophet, boarded at his house two months during the summer of the same year [1843]. And the said Hannah Ells Smith also lived at his house several months in 1844 after the Prophet's death.
And further, that President Smith frequently visited his wife Hannah at his house.