[citation needed] In 1374 upon the death of her father she married her first husband Sir John Staunton of Otymy, County Kildare, (now Clane) who died before 1390.
The English suffered many casualties due to the covert attacks Art perpetrated against King Richard's men.
Finally, a truce was reached in 1395; Art went to Dublin where he swore fealty to King Richard and received the honour of a knighthood.
However, when the king departed for England in May 1395, Art renounced his fealty and proceeded to harass the English who lived in the Pale.
King Richard led a second expedition to Ireland in 1399, and Art's lands of Norragh were once again forfeited to the English crown.