The following is taken from O'Hart's Irish Pedigree, Page 223: In May, 1608 when Sir Cahir O'Doherty, lord of Irishhowen, aged 21 took Culmore Fort near Derry, and slew Gov. Sir George Paulett, he placed in charge of the fortress the valiant Felim MacDevitt, after which he defeated the English in several engagements and ravaged their settlements. On the approach of an English army of 4000 men under Marshall Wingfield and Sir Oliver Lambert, Felim MacDevitt, unable to hold the place against as great a force, set fire to the fortress and sailed off with his men towards Derry, carrying away some of the cannon and throwing the rest into the sea. ~ I have another paragraph from the "History of the Irish Church" by Rev. Thos Walsh - Page 755 that describes Felims' strong bond with the Catholic faith and his death.