In the far north of Ireland they flourished as the McMahons of the Kingdom of Oriel, while further south they were proud holders of the title of Princes of Thomond.
• Although separated by distance they both could lay claim to distinguished lineages, while also proving resolute in defence of their ancient rights and privileges.
• Name variations include: MacMathghamhna (Gaelic), MacMahon, Mahon, McMahan, Mahan, Mann, Maughan.