Update: Samuel Mangas, Jacob Mangas
Yes, the court documents prove a complaint was made by Nancy Lay to the Logan County court that she was with child in 1870 and Samuel Mangas was the father. Jacob Mangas is also listed in the court documents where he puts his farm up as collateral for the fine charged to Samuel for his part in the case against him. Another fellow named S.S. Hatfield was also named. He may have been Samuel's lawyer.