Timeline: Gehlen, Pierre Henri: Michael and Deborah Hervey's Genealogy

1819 - 1846 (26 years)

	Date	Event(s)
1	1817	4 Mar 1817—4 Mar 1825: James Monroe James Monroe U.S. Presidency
2	1825	4 Mar 1825—4 Mar 1829: John Quincy Adams John Quincy Adams U.S. Presidency
3	1829	4 Mar 1829—4 Mar 1837: Andrew Jackson Andrew Jackson U.S. Presidency
4	1832	14 May 1832—2 Aug 1832: Black Hawk War Black Hawk War
5	1835	2 Oct 1835—21 Apr 1836: Texas War of Independence Texas War of Independence
6	1836	11 May 1836—2 Feb 1848: Mexican-American War Mexican-American War
7	1837	4 Mar 1837—4 Mar 1841: Martin Van Buren Martin Van Buren U.S. Presidency
8	1841	4 Mar 1841—4 Apr 1841: William Henry Harrison William Henry Harrison U.S. Presidency 4 Apr 1841—4 Mar 1845: John Tyler John Tyler U.S. Presidency
9	1845	4 Mar 1845—4 Mar 1849: James K. Polk James K. Polk U.S. Presidency