(Lagan, County Louth, 17 April 1599 – Bohemia, 7 November 1631) was an Irish Franciscan scholar, who was murdered near Prague in the course of the Thirty Years' War.
Five years after his, he went to Rome with Hugh MacCaghwell, the Definitor General of the Order, and when he had completed his studies at the College of St. Isidore,[3] was ordained a priest.
They stayed with their Capuchin confreres at the Friary of Our Lady of the Snows while attempting to rebuild the derelict Monastery of Saint Ambrose.
Fleming, accompanied by a fellow countryman named Matthew Hoar, headed for Vienna to arrange accommodations for the friars who were vacating Prague.
[4] Fleming was especially devoted to ecclesiastical history, his tastes in this direction being still further developed by his friendship with his countryman Hugh Ward.
That and other manuscripts fell into the hands of Thomas O'Sheerin, a lecturer in theology at the College of St. Anthony of Padua who edited and published them at Louvain in 1667.