They were held hostage by two men who threatened harm to a 14-year-old girl if their demands weren't met.
The family, who live in the Drive in Johnstown Manor, noted the WiFi connection wasn't working at around 6pm, and shortly thereafter, heard a loud bang.
Two men burst in to the house through the smashed rear patio window.
The men were carrying screwdrivers and possibly pliers.
They demanded, and were given, cash and valuables and then forced the family in to an up-stairs bedroom, where they were given more jewellery.
The ordeal lasted between 35 and 40 minutes.
Gardai believe the men may have been in contact with a third party via mobile phone for the duration of the time in the house.
The family freed themselves after about fifteen minutes and raised the alarm.
