• Newspapers: Look for wedding and anniversary announcements Obituaries may also tell when the person was married.
• Census records:
Particularly 1900 and 1910, which asked for the number of years
married. The 1850, 1860 and 1880 censuses asked if married within the
year, and 1870 asked for the month of marriage if married within the
year. The 1930 census, which becomes available to the public in 2002,
asked for the age at first marriage.