Sessions of parliament drew many of the wealthiest of Ireland's Anglo-Irish Ascendancy to Dublin, particularly as sessions often coincided with the Irish Social Season, running from January to 17 March (St. Patrick's Day), when the Lord Lieutenant presided in state over state balls and drawing rooms in the Viceregal Apartments in Dublin Castle. Leading peers flocked to Dublin, where they lived in enormous and richly decorated townhouses, initially on the Northside of Dublin, later in new Georgian residences around Merrion Square and Fitzwilliam Square. Their presence in Dublin, along with large numbers of servants, provided a regular boost to the city's economy.