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On page 87 of the 1991 publication entitled _Who Married Whom, Covington County, Mississippi_, compiled by Janet Smith, Jean Strickland, & Patricia N. Edwards, there is only one entry for a Langford, Solomon, b. 1770 (based on the 1820 census), and that is too early for the time period you specify. There is, however, at least one Langford family still living in the Seminary/Collins area from whom you might obtain information.