Mullanphy was a member of the St. Louis Board of Alderman from 1835 to 1836 and served as Judge of the St. Louis Circuit Court from 1840 to 1844.
Mullanphy was a member of the St. Louis Board of Alderman from 1835 to 1836. Mullanphy served as Judge of the St. Louis Circuit Court from 1840 to 1844.