Authorities in Bucks County found Haddon, 76, dead in a second-floor bedroom Friday morning after emergency dispatchers were notified about a person unconscious at the Solebury Township home. A

A 76-year-old woman found dead of suspected carbon monoxide poisoning at a historic Bucks County farmhouse property early Friday has been identified as Dayle Haddon, who had a successful career as a model in the 1970s and ‘80s and later became a UNICEF ambassador.

Dayle Haddon, one of America's first supermodels, who later gained notoriety as an actress, and humanitarian died in Bucks County, Pennsylvania of carbon monoxide poisoning.

Model and activist Dayle Haddon has died from suspected carbon monoxide poisoning at a Pennsylvania home. She was 76. Solebury Township Police responded to a call Dec. 27, just after 6:30 a.m., regarding a man, 76, passed out at a home in Bucks County, police reported. A woman, 76, was found dead on the second floor of the home.

First responders were called to the property just after 6:30 a.m. Friday after receiving reports of a 76-year-old man lying unconscious on the first floor of the suite, the Solebury Township Police Department said.

Marc Blucas spoke about renovating the 1700s home that his mother-in-law Dayle Haddon would later die in during a resurfaced 2016 interview with the Hallmark Channel.

Actress and model Dayle Haddon died from suspected carbon monoxide poisoning inside a Pennsylvania home owned by her son-in-law, actor Marc Blucas, NBC10 confirmed.