Barnstable police say 32-year-old Kevin Quinn, of Mashpee, was driving on Route 28 early Saturday morning when his SUV collided with another vehicle.
The driver of the other vehicle, 22-year-old Mickey Rivera, of Fall River, also died and his passenger was seriously injured.
According to records, Rivera was previously in custody for two years for his connection to a 2015 murder.
Quinn was a Marine veteran who served two tours of duty in Afghanistan. He had just spent the evening with his wife and their first child, who had been born on Wednesday.
A fund set up for the Quinn family reported raising more than $160,000 by Monday afternoon.