The article is devoted to the academic biography of Jose Maria Coma Fort, one of the most the eminent Spanish historians of Roman Law (1969–2015). Particular attention is paid to his investigation of the manuscript and early print tradition of the Theodosian Code. It seems possible to affi rm that two last monographs of Coma Fort (2008 and 2014) should be considered as necessary steps to the publication of a new critical edition of the Theodosian Code. This edition, however, was not published due to the unexpected death of Coma Fort.