The Sovereignty of the Abbey-Principality of San Luigi and the Royal House Polanie-Patrikios
Its history, theoretical basis and practical application
by Edmond John Kersey de Polanie-Patrikios, Prince-Abbot of San Luigi and Head of the Royal House Polanie-Patrikios
A further discussion related to these matters in a contemporary European legal context can be found in the paper by R.A.U. Juchter van Bergen Quast, To what extent do religious organizations have a fons honorum to grant titles and awards? which deals with the case of the Abbey-Principality of San Luigi and is reproduced with permission here.