I think someone asked me to look out for Underwood marriages at the PA State Archives. Here is one. The lady's first name is very unusual. Full Name of Female, Residence, Place Of Birth, Age of Female, Color, Date Of Marriage, Full Name of Male, Occupation, Residence, Place Of Birth, Age of Male, Color, County Davis, Elljyerly; Fayette Co.; Washington Co.; 21; W; June 16, 1887; John Underwood; Coal Miner; Fayette Co.; Ohio; 22; W; Fayette Co.