The US vice-president has family links to the county – his great-great-grandfather Patrick Blewitt emigrated from there in 1835.
The Vice-President began his six-day visit to Ireland last night, and held a private one-on-one meeting with Enda Kenny at Government Buildings.
There he was presented with a hurley and sliotar.
This morning he'll visit Aras an Uachtaran – to sign the same visitors' book that his president Barack Obama did just over five years ago.
After a private meeting with President Michael D Higgins he'll fly to Knock Airport to spend the day in County Mayo.
The vice-president will spend the day touring the county, led by Taoiseach Enda Kenny, and is likely to meet some of his distant cousins there.
