It's believed that Cathriona White was legally married to another man at the time of her death.
Cathriona, a native of Tipperary, had been dating Jim Carrey on and off for the last four years.
The LA Medical Examiner's Office have confirmed that another man, Cathriona's husband, is noted on her official documents.
"She had a husband, we have a husband as next of kin," a spokesperson told The Hollywood Reporter.
"We're not releasing any more information on next of kin, but we do have her as married."
A source close to Truman Show star Jim alleges that Cathriona was married but legally separated and planning to file for divorce.
"There is no way that Jim would have taken her out to public places if he thought she was married," the insider said.
"As far as Jim was concerned, Cat was separated from her husband and was going to start divorce proceedings in December.
When people are separated, they date or do whatever they need to do."
Cathriona's body was found at her home in Sherman Oaks, California on September 28.
The LA County Coroner's office confirmed that Cathriona left several suicide notes and four different kinds of medication, including Ambien, Percocet, Zofran and Propranolol.
Since the make-up artist's apparent suicide, Jim has been helping Cathriona's family in a number of ways, including putting them up in a hotel in LA and helping them make plans to have her body repatriated.
It's also been reported that he will travel to her home town of Cappawhite in Tipperary for the funeral.