James Hoban

It is believed that Leinster House provided inspiration for the design of the White House in Washington, D.C.

The architect of the White House, James Hoban, grew up in Kilkenny and studied at the Dublin Society School of Architectural Drawing. The school was situated on Grafton Street, minutes walk away from Leinster House. Hoban emigrated to America in 1785, and by 1787 he was settled in Charleston, South Carolina. He began to establish himself as an architect there. 

In March 1792, the commissioners for the Federal District announced a design competition for the public buildings. Hoban's plans for the President's House were chosen by the commissioners. Work began on the White House in October 1792. The front facade shares many similarities with Leinster House, including the triangular pediment supported by four columns, the three windows beneath the pediment, and the combination of triangular and rounded window crowns.

It must be noted that Hoban was a slaveowner, and enslaved people played a vital role in building the White House. Enslaved labourers were hired out by local slave owners to clear the land, quarry and transport stone, and make bricks. Enslaved craftsmen were also involved, and the names of four are known- Peter, Ben, Daniel and Harry.