The jury in the Jason Corbett murder trial has found Molly and Thomas Martens both guilty of second degree murder.
The nine women and three men were sent out by the judge to consider their verdict in the death of the Limerick man on Tuesday.
They have both been sentenced to 20 to 25 years in prison.
The 39-year-old Limerick man was beaten to death with a baseball bat at his home in North Carolina two years ago.
Molly Martens and her father Thomas Martens denied the second degree murder charge.
The pair claimed they acted in self defence.
The case heard that they delayed making a 911 call and pretended to carry out CPR.
The jurors had the option of finding them guilty of second-degree murder, voluntary manslaughter or not guilty.
The difference between second-degree murder and voluntary manslaughter is that second-degree murder requires malice.