This paper examines the stylometric similarities between James Joyce and Flann O達rien, demonstrating which works from the latter痴 oeuvre are stylistically the most Joycean. We will outline the results of a series of quantitative enquiries focused specifically on Joyce and O達rien, before offering a number of literary interpretations. It has long been argued that Brian O誰olan, operating under the pseudonym of Flann O達rien, is a disciple of James Joyce. This relationship remains a concern for scholars, and so our purpose here is to contribute some computational evidence to the discussion. We pinpoint those exact moments where O達rien痴 style is quantitatively similar to that of Joyce, using our results to re-engage existing arguments with renewed statistical precision.