William Miller Dennis I (January 18, 1810 – July 18, 1882) was an American businessman, Democratic politician, and Wisconsin pioneer.
[1][2] The constitutional document produced by this convention was ultimately rejected by voters, but a subsequent effort secured Wisconsin statehood in 1848.
[6] Subsequently, Dennis became president of the Wisconsin National Bank and was elected to two non-consecutive terms as mayor of Watertown, in 1862 and 1866.
His association with bad railway bonds significantly damaged his reputation and he never held elected office again after his second mayoral term.
[2] After retiring from the bank, he made significant profitable investments in the region of Watertown, Dakota Territory, which he left to his sons.