He was a member of the Massachusetts state legislature in 1839 , 1840 , 1842 , 1849 , and 1850 , and mayor of Charlestown from 1851 to 1853 . Frothingham was a delegate to the 1852 Democratic National Convention . During the 1852 election , Frothingham was an energetic supporter of Franklin Pierce for President . He was also a delegate to the 1876 Democratic National Convention
1876 Democratic National Convention
1876 Democratic National Convention
Richard Frothingham Jr.