O Directory References Discover 9 Mind-Altering Plants Causes of the Great Depression 7 of the World’s Deadliest Shipwrecks Where Is “Old Zealand”? The Seven Sacraments of the Roman Catholic church Will Light-Speed Space Travel Ever Be Possible? 12 Novels Considered the “Greatest Book Ever Written” 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
