Moyasta (Irish: Maigh Sheasta, meaning 'plain of Asta'[1]) is a hamlet in County Clare, Ireland, situated between Kilkee and Kilrush on the N67.

[2] On 13 March 1921 a Moyasta farmer and Sinn Féin magistrate named Tom Shannon was murdered in his home by unknown assailants.

According to the Irish Times on 7 April 1921, which based its article on a report from British government, the killing was done by other Sinn Féin supporters.

In fact, it was clear that the assailants spoke with a strange accent, something the English Court Of Inquiry was not told by the Royal Irish Constabulary.

Due to the lack of information, the Court could only conclude that the murder was committed by "persons unknown".