James V continued and expanded his father's building programme, creating the centrepiece of the castle, the Royal Palace, built under the direction of Sir James Hamilton of Finnart and masons brought from France. James V also died young, leaving unfinished work to be completed by his widow, Mary of Guise. His infant daughter, Mary, Queen of Scots, was brought to Stirling Castle for safety, and crowned in the chapel royal on 9 September 1543. She too was brought up here, until she was sent to Inchmahome Priory, and then to France in 1548. In the 1550s, during the Regency of Mary of Guise, Anglo-French hostilities were fought out in Scotland. Artillery fortifications were added to the south approach of the castle including the 'French Spur', and these form the basis of the present Outer Defences. Guise employed an Italian military engineer called Lorenzo Pomarelli. From 1534 to 1584 Michael Gardiner was in charge of the artillery.