This surname is of Irish origin being an Anglicized form of the Gaelic O Mearain i.e., 'descendant of Mearan', a personal name from 'mear' meaning 'lovely' or 'quick'. It is most certainly a sept of County Monaghan. Bearers of the name Marren, County Sligo are believed to have been part of the Ulster sept above. Recordings include on Elizabeth Marron, daughter of Eliza and Thomas, who was christened on March 24th at Downpatrick, Co. Down. John, son of Thomas and Catherine Mee Marron, was christened at Carrickmacross, Monaghan, on August 12th 1867. Recordings show that one Mary Marron aged forty, sailed from Liverpool on the 'Henry Clay' on December 26th 1846, together with her two sons Miles (twenty), Thomas (fifteen), and her two daughters Betty (seventeen) and Francis (thirteen). They were famine immigrants into the port of New York. The first recorded spelling of the family name is shown to be that of Katherine Marron, which was dated 1714, christened in St. Peter and St. Kevin's Church, Dublin, during the reign of King George 1, 'The First Hanoverian', 1714 - 1727. Surnames became necessary when governments introduced personal taxation. In England this was known as Poll Tax. Throughout the centuries, surnames in every country have continued to "develop" often leading to astonishing variants of the original spelling.