Dolours Price-Rea, the former wife of The Crying Game actor Stephen Rea, left an estate valued at €705,000 (£603,952) according to a document lodged in the Probate Office in Dublin.
The IRA bomber, whose address was St Margaret's Road, Malahide, Co Dublin, died intestate and, after deductions, the net value of her property and possessions came to €590,863 (£506,174).
Ms Price-Rea, who was born in Belfast in 1951, was found dead in her home in the seaside village on January 24, 2013, having died the previous night as a result of the toxic effect of a mix of prescribed sedative and anti-depressant medications, an inquest heard.
Her body was found by one of her sons.
When paramedics arrived, they attempted to resuscitate her. However, she was pronounced dead at the scene.
In the months before her death, she was engulfed in controversy over allegations made in interviews with Boston College.
The 61-year-old republican was buried in Milltown Cemetery, Belfast, and Rea, one of Ireland's best-known theatre and film actors, was among the mourners.
Ms Price-Rea and her sister Marian joined the IRA in Belfast in the 1970s, and until her death she remained opposed to the Good Friday Agreement and the decommissioning of IRA weapons. She was adamant in interviews given towards the end of her life that Sinn Fein president Gerry Adams was the chief of her IRA unit; he denies ever being a member of the terror group.
She also admitted being part of the terrorist squad that kidnapped widowed mother of 10, Jean McConville, in 1972, and driving the car which took Mrs McConville - whose 'crime' was giving a cup of tea to a British soldier - to where she was murdered and secretly buried in Co Louth.
Ms Price-Rea came from a staunchly republican family and in 1973 she and Marian, along with prominent Sinn Fein MLA Gerry Kelly, car-bombed the Old Bailey in London. More than 200 people were injured and one of the victims died of a heart attack.
Most of the IRA activists involved in the attack were arrested trying to board a plane to Ireland. Ms Price-Rea was sentenced to life in prison, which was later commuted to 20 years. She and her sister went on immediate hunger strike and were force-fed by the British prison authorities.
Ms Price-Rea was released from prison in 1980 and afterwards married Derry-born actor Rea, who was a founder with Brian Friel of Field Day theatre company and one of the most renowned actors of his generation.
The couple lived in north county Dublin and had two sons, but were divorced in 2003. Dolours then moved to Malahide.
Letters of administration in the estate of Dolours Price-Rea were taken out by her sons, Daniel Rea, a teacher, and Oscar Rea, a student.