People United Kingdom Michael Angelo O'Callaghan peoplepill id: michael-angelo-ocallaghanMAO 11 views today 11 views this weekAnglo-Irish agricultural scientistMichael Angelo O'CallaghanBiographyListsAlso ViewedListsMichael Angelo O'Callaghan is in following listsBy field of workNotable English politiciansGender:Male, Born in:Years 1850 to 1899By work and/or countryNotable English Civil servantsGender:Male, Born in:Years 1850 to 1899From our partnersSponsoredMichael Angelo O'Callaghan