Wikipedia
Fiant is an abbreviation of Fiant litterae patentes, which means Let letters patent be made. These were warrants to the Court of Chancery in Ireland, which was the authority for the issue of letters patents under the Great Seal. They dealt with matters ranging from appointments to high office and important government activities, to grants of pardons to the humblest of the native Irish.
Fiants date from the reign of Henry VIII through that of William and Mary and are of major importance to persons doing Irish genealogical research.
The original fiants were destroyed in 1922, in a fire at the Four Courts, but the material had been calendared.
Usage examples of "fiant".
Because Fiant was dematerialized, he passed right through the peephole, headfirst.
You could talk to him about os and argos, suet and grease, croteys, fewmets and fiants, but he only looked polite.
They all know or feel this great ancient truth: Quod illi principi et præpotenti Deo qui omnem hunc mundum regit, nihil eorum quæe quidem fiant in terris acceptius quam concilia et cætus hominum jure sociati quæ civitates appellantur.