Timeline: Mary Ann Greenhalgh: Our Family History

1845 - 1847 (2 years)

	Date	Event(s)
1	1841	4 Apr 1841—4 Mar 1845: John Tyler U.S. Presidency
2	1845	1845—1845: Tarmac laid for first time (in Nottingham) 4 Mar 1845—4 Mar 1849: James K. Polk U.S. Presidency 17 Mar 1845—17 Mar 1845: The rubber band patented by Stephen Perry
3	1846	25 Apr 1846—2 Feb 1848: Mexican-American War 10 Sep 1846—10 Sep 1846: The sewing machine is patented by Elias Howe
4	1847	1847—1847: US Mormons make Salt Lake City their centre Jan 1847—Jan 1847: An anesthetic used for the first time in England (James Simpson used ether to numb the pain of labour)