Saint Martina (Subscribe)
Links
Lives of the Saints: St. Martina
http://www.ewtn.com/library/MARY/MARTINA.htm
Virgin, martyr. Entry in Butler's Lives of the Saints.
Catholic Online: St. Martina
http://www.catholic.org/saints/saint.php?saint_id=737
Brief description.
Catholic Encyclopedia: St. Martina
http://www.newadvent.org/cathen/09730a.htm
Roman virgin and martyr, d. 226 or (more likely) 228.