Brigham Young (aged 44) marriage to Abigail Harback (1790-1849) (aged 55) previously married to John Calvin Hall (unknown if she was widowed, divorced, or separated)
Brigham Young (aged 44) marriage to Amy Cecilia Cooper (1804-1852) (aged 41) married to (non-Mormon?) Joseph Aldrich; separated later and he remarried
Brigham Young (aged 44) marriage to Julia Foster (1811-1891) (aged 36) widow of Mormon Jonathan Hampton, who died in Nauvoo in 1844. Stayed in Illinois when Brigham Young emigrated to Utah in 1847. Young sent for her in 1855, and she came with her children and managed the Lion House.
Brigham Young (aged 44) marriage to Mary Ann Turley (1827-1904) (aged 18) first marriage divorced 1851
Brigham Young (aged 44) marriage to Mary Ellen de la Montaigne (1803-1894) (aged 42) divorced from James Boyd Woodward divorced 1846-12-13 and re-married Woodward; both Woodward and de la Montaigne were adopted to Brigham Young at Nauvoo
[Wikipedia, List of Brigham Young's Wives, http://en.wikipedia.org/wiki/List_of_Brigham_Young%27s_wives]