Lundon, who was a professor of languages and teacher of classics, supported the Irish independent movement. He was a member of the Fenian Brotherhood and following the 1867 Fenian Rising, was imprisoned for two years under the "Acts to Suspend the Rights of Habeas Corpus 1866". He also served a short prison sentence in 1889 for coercion during a period of protest in Ireland referred to as the "Land War". During his time in the House of Commons he was described as a kindly figure and popular with his colleagues.