Simon Monjack, who died Sunday in the Hollywood home he once shared with wife Brittany Murphy, had a heart condition and was due to have bypass surgery.
This according a rep for Murphy's mother, who also lost Brittany in December.
"I can tell you he was excited about what the future held in terms of the legacy of Brittany Murphy," publicist Roger Neal told reporters. "He looked fine to me."
Neal said he last saw Simon Monjack on Saturday, and used the opportunity to set the record straight: "As far as we know he passed away of natural causes."
Monjack was 40, not 39 as was previously reported, he said. Also, there is no indication that he died of an accidental drug overdose, as some reports suggest.
R.I.P. Brittany and Simon married in 2007.
"He did have a heart condition [and] due for bypass heart surgery. What's been on TMZ I don't believe is correct at all; anything that they have intimated is not correct," Neal said. "He was a man full of life and a man excited about the future."
The accidental overdose theory was floated by the celebrity gossip site yesterday, just hours after Sharon Murphy discovered him unconscious in his bedroom.
Sadly and eerily, Sharon was the one who found her own daughter's lifeless body five months ago and made the dreaded 911 call to the paramedics afterward.
"It is a very sad day for Ms. Murphy," Neal said. "In less than six months she suffered a double loss. We are asking that the media be as respectful as possible."
"She's devastated. She's very strong. I don't know how you handle something like that. She is resting. Sharon loved Simon as a son. They were a close family."
The rep said Simon Monjack dreamed of carrying on his wife's legacy.
"Brittany's dream, as was Simon's, was to help children who want to learn to do ballet, sing, etcetera, who couldn't afford it. [He] would raise money for it."