He has/had a relationship with Harriet Bucknam Knight.
http://trees.ancestry.com/pt/AMTCitationRedir.aspx?tid=114784053&pid=1147
Green Cram<br>Gender: Male<br>Birth: 1810 - Cumberland, ME<br>Death: 1867<br>Parents: Ann Cram (born Butterfield), Levi Cram<br>Siblings: John Cram, Betsey Mayberry (born Cram), Andrew Cram, Strong Cram, Samuel Cram, Stephen Cram, Levi Cram