The Leinster Branch was inaugurated at a meeting on 31 October 1879. The meeting was held at Lawrence's premises 63 Grafton Street and was largely attended. Although this was the formal founding of Leinster as we know it today, with the amalgamation of the Irish Football Union and the Northern union, the Leinster provincial team had been active since 1879 – when the first interprovincial derby was played against Ulster. The Leinster and Ulster teams also made up the representative Irish team that competed against England in Ireland's first ever international in 1875. Upon the founding of the union, Munster were also added to the fray in 1879, when their first provincial team was selected and first Munster players represented Ireland.