Marston's mom confirmed the sad news on Facebook. "Dear family and friends, it is with a heavy heart that I share this devastating news. My beloved and cherished son, Nathaniel Marston, who was putting up the good fight until last night was not able to continue due to the traumatic and devastating nature of his injuries. Nathaniel passed away peacefully as I held him in my arms."
The 40-year-old was in critical condition since the the Reno, Nevada, collision, which left him with a broken neck and back.
Marston was known for his roles on "One Life to Live" and "As the World Turns."