After helping James K. Polk triumph at the 1844 Democratic National Convention , Donelson was appointed by President John Tyler to represent the United States in the Republic of Texas , where Donelson played an important role in the annexation of Texas . In 1846 , President Polk appointed Donelson appointed as Minister to Prussia . He left that position in 1849 and became the editor of a Democratic newspaper , but alienated various factions in the party . In 1856 , the Know Nothings chose him as their vice presidential nominee , and he campaigned on a ticket with former Whig President Millard Fillmore . The ticket finished in third place in both the electoral and popular vote behind the Democratic and Republican tickets . Donelson also participated in the 1860 Constitutional Union Convention
1860 Constitutional Union Convention
1860 Constitutional Union Convention
Andrew Jackson Donelson