For over half a century the Conner family played an important role in treaty making and the removal of Native Americans. Between 1804 and 1866 William Conner, his brothers, and sons were involved in over 30 treaties (out of a total of 367 signed and ratified from 1778 to 1868) between the United States and Native Americans.
| Date | Tribe/Location | Signer |
|---|---|---|
| August 21, 1805 | Delaware, Potawatomie, etc. (Grouseland, Indiana Terr.) | John Conner* |
| September 30, 1809 | Delaware, Potawatomie, etc. (Ft. Wayne, Indiana Terr.) | John Conner* |
| July 22, 1814 | Wyandot, Delaware, Shawnee (Greenville, Ohio) | John Conner* |
| September 29, 1817 | Wyandot, Seneca, Delaware (Rapids of the Miami) | William Conner |
| September 17, 1818 | Wyandot, Seneca, etc. (St. Mary's, Ohio) | John Conner* |
| September 20, 1818 | Wyandots (St. Mary's Ohio) | John Conner* |
| October 2, 1818 | Wea (St. Mary's, Ohio) | John Conner* |
| October 2, 1818 | Potawatomie (St. Mary's, Ohio) | William Conner & John Conner* |
| October 3, 1818 | Delaware (St. Mary's, Ohio) | William Conner & John Conner* |
| October 6, 1818 | Miami (St. Mary's, Ohio) | William Conner & John Conner* |
| August 29, 1821 | Ottawa, Chippewa, etc (Chicago) | Henry Conner* |
| August 5, 1826 | Chippewa (Fond Du Lac, Mich. Terr.) | Henry Conner* |
| October 16, 1826 | Potowatomi (Mississinewa, Id.) | Henry Conner, James Conner & William Conner* |
| October 23, 1826 | Miami (Mississinewa, Id.) | William Conner |
| August 11, 1829 | Chippewa, Menomonie, Winnebago (Fox River, Mich. Terr.) | Henry Conner* |
| September 24th, 1829 | Delaware (White River, Mo.) | James Conner** |
| August 30, 1831 | Ottowa (Miami Bay, Lake Erie) | Henry Conner* |
| October 20, 1832 | Potawatomie (Camp Tippecanoe, Ind) | William Conner & James Conner* |
| September 26, 1833 | Chippewa, Ottawa, Potawatomie (Chicago) | James Conner* |
| September 26, 1833 | Supplement to above treaty | James Conner* |
| September 26, 1833 | Supplement to above treaty | James Conner* |
| September 26, 1833 | Supplement to above treaty | James Conner* |
| September 26, 1833 | Supplement to above treaty | James Conner* |
| January 14, 1837 | Chippewa (Detroit) | Henry Conner* |
| December 20, 1837 | Chippewa (Flint River, Mich) | Henry Conner* |
| February 7, 1839 | Chippewa (Saginaw, Mich) | Henry Conner* |
| May 15, 1846 | Comanche (Council Springs, Tex) | Capt. John Conner*** |
| May 6, 1854 | Delaware (Washington DC) | James Conner*** |
| May 30, 1860 | Delaware Capt. (Sarcoxieville, Kan) | Capt. John Conner & James Conner*** |
| July 2, 1861 | Delaware (Leavenworth City, Kan) | Capt. John Conner & James Conner |
| July 4, 1866 | Delaware (Delaware Agency, Kan) | Capt. John Conner & James Conner |