O Directory References Discover Which Religion Is the Oldest? 10 Best Hockey Players of All Time Timeline of the Space Race, 1957–69 What Is the Most Widely Practiced Religion in the World? All 119 References in “We Didn’t Start the Fire,” Explained How Did the Sperm Whale Get Its Name? 10 Failed Doomsday Predictions Contents O surname prefix Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Ua Learn about this topic in these articles:history of surname prefix Mac In Mac…Tierney (Ua, later shortened to O, means grandson or, more loosely, descendant).Read More
