The disclosure means that eight people aboard the pleasure craft were current or recent Sonoma and Lake County residents.
Frank Moore, 52, had travelled to Florida with his son Josh Moore, 18, from their home in Lakeport to visit his other son Justin Thomas Moore, 23, who had moved to Florida.
The Moores were injured April 12 in Palm Valley, Fla., when the 22-foot boat they rode in crashed into a 25-foot tugboat moored at a temporary dock.
Two young adults from Santa Rosa were killed and three others injured.