Mr. and Mrs. Evan Jones, of St. Petersburg, Fla., announce the forthcoming marriage of their daughter, Amanda Lynn Jones, to Dean Bradford Layman, son of Mr. and Mrs. Dean Layman, of Ellicott City. Jessica Prosen, daughter of David and Beverly Prosen, of Columbia, is engaged to be married to Ryan Strawcutter, son of Susan Strawcutter, of Harrisburg, Pa., and Ron Strawcutter, of Tree City, Ga.