| Isaac S. Tallmadge | |
| Office: | District Attorney of the Fond du Lac County, Wisconsin |
| Term Start: | January 1, 1856 |
| Term End: | January 1, 1858 |
| Predecessor: | Edward S. Bragg |
| Successor: | Albert W. Paine |
| Term Start1: | January 1, 1850 |
| Term End1: | January 1, 1852 |
| Predecessor1: | S. S. N. Fuller |
| Successor1: | William H. Ebbets |
| State Assembly2: | Wisconsin |
| District2: | Fond du Lac 3rd |
| Term Start2: | January 3, 1853 |
| Term End2: | January 2, 1855 |
| Predecessor2: | Position Established |
| Successor2: | William H. Ebbets |
| Birth Name: | Isaac Smith Tallmadge |
| Birth Date: | 31 May 1824 |
| Birth Place: | New York |
| Spouse: | Cornelia Ruggles (m. 1847) |
| Father: | Nathaniel P. Tallmadge |
| Mother: | Abby Lewis (Smith) Tallmadge |
| Party: | Democratic |
| Profession: | lawyer |
Isaac Smith Tallmadge (born May 31, 1824; died before 1893) was an American lawyer and served two terms in the Wisconsin State Assembly, representing central Fond du Lac County.[1]
Isaac Tallmadge was born on May 31, 1824, in New York.[2] [3] He was the son of Nathaniel P. Tallmadge, who served as United States Senator from New York and Governor of the Wisconsin Territory. He graduated from Union College in 1842 and married Cornelia Ruggles in 1847. In 1849 and 1855, he was elected district attorney of Fond du Lac County, Wisconsin, and in 1853 he served in the Wisconsin State Assembly, representing Fond du Lac County. In 1859 he was the Democratic candidate for Wisconsin circuit court in the 4th circuit, but was defeated by David Taylor.[4]
Sometime after 1859, he moved to New York City and practiced law.[2]
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