Rögnvald Kale Kolsson, also known as St. Ronald or St. Ronald of Orkney, was an Earl of Orkney and a Norwegian saint. Ragnvald was canonized in 1192 by Pope Celestine III.—St. Monica RCIA Blog
So then, brethren, stand firm and hold to the traditions which you were taught by us, either by word of mouth or by letter (2 Thess. 2:15). Guard what has been entrusted to you. Avoid the godless chatter and contradictions of what is falsely called knowledge, for by professing it some have missed the mark as regards faith (1 Tim. 6:21-22).