Dr. Forwood was born in Baltimore, Maryland in 1946. He was raised in Towson and Reisterstown, Maryland. Denny graduated from Pennsylvania State University in 1968 with a degree in Microbiology. He graduated from the University of Maryland Dental School in 1972. Dr. Forwood served in the United States Navy from 1972-1974 at the Naval Hospital in Newport, Rhode Island. At that facility he treated hospital patients/hospital staff, and those attending the Navy War College. He has practiced General Dentistry in Frackville, Pennsylvania, from 1974 to the present.

Denny has been a Gettysburg Licensed Battlefield Guide for 15 years. His wife, Dana, is a teacher at Gettysburg Area High School. They have two daughters Elyse, and Emily. His other interests includes raising and showing bulldogs and tinkering with a temperamental English Morgan Plus 4 sports car.