I didn't find a marriage record for Benjamin Ray in MO, but i didn't find anything called Early Marriages of Pulaski, MO either. I did find a 1840 census for a Ben Ray in KY, not sure if it is your Benj Ray or not, with female age 30-39, which could be his wife Susan. Did not find him in MO on 1840 census
1840 United States Federal Census
Name: Benj Ray
Home in 1840 (City, County, State): Carroll, Kentucky
Free White Persons - Males - 5 thru 9: 1
Free White Persons - Males - 40 thru 49: 1
Free White Persons - Females - Under 5: 3
Free White Persons - Females - 5 thru 9: 2
Free White Persons - Females - 30 thru 39: 1
Slaves - Females - Under 10: 1
Slaves - Females - 24 thru 35: 1
Persons Employed in Agriculture: 1
Free White Persons - Under 20: 6
Free White Persons - 20 thru 49: 2
Total Free White Persons: 8
Total Slaves: 2
Total All Persons - Free White, Free Colored, Slaves