Ross O’Rourke (31), with a previous address in Tullow, Carlow, has pleaded not guilty by reason of insanity to the murder of his father, Mr Posschier (65).

The jury, Mr Justice Hunt said, will have to consider the ordinary meaning of the words "intoxicating influence" in coming to their decision.

Prosecuting counsel Anne-Marie Lawlor SC said she expected the accused, James Kilroy (51), to accept that he killed his wife, Valerie French Kilroy (41)

Moire Bergin is charged with the murder of her mother, Mary Bergin, in April 2022