[1] Then Mangan featured for the county junior team, twice scoring five points from play, with both games against Offaly.
[1] He was put into the team in place of established corner-forward Ger Heavin and assigned to mark Tomás Mannion.
[1] Ó Sé left Mangan out for the first 2004 O'Byrne Cup but started him in the second game of the competition, against Kildare.
[2][3] Ó Sé made a memorable comparison between Mangan and a loaf of bread after Darren Rooney of Laois knocked him over the sideline during the drawn game between the teams.
[1] He ran unsuccessfully as a candidate for the Labour Party in the Longford–Westmeath constituency at the 2020 Irish general election, with the intention of replacing the retiring Willie Penrose.
[1] Only Dessie Dolan and the Westmeath hurling manager Michael Ryan ever refer to him as "Alan".