Arthur O'Connor (1 October 1844 – 30 March 1923), was an Irish politician and Member of Parliament (MP) in the Parliament of the United Kingdom of Great Britain and Ireland from 1880 to 1900.
He was elected to the House of Commons as MP.
He then contested both the new Queen's County Ossory seat and East Donegal for the Irish Parliamentary Party in 1885 and was elected for both.
He chose to sit for East Donegal.
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