Greer County, Oklahoma, Marriage License 1901-1930 Grooms Index From Greer County Genealogical and Historical Society Microfilm Roll 20, Mangum City Library, Mangum, Oklahoma. Microfilmed from Marriage License Index in Greer County Court Clerk Office, P.O. Box 216, Mangum, Oklahoma, 73554, in 1993 by Genealogical Society of Utah. One thousand marriage records of Greer County, Texas and Greer County, Oklahoma Territory, 1886-1901, were lost in a court office fire at Mangum in December 1901.