Let's quote what User:Ew actually said in the 2007 move debate: 

Architecture in Italy, 1400-1500 by Ludwig H. Heydenreich, Yale University Press; Second Revised edition, 1996, ISBN 0-300-06467-5, p.74, 80, 101, 183 (index) & 184 (index):
...by Giorgio da Sebenico, whose hand...
...with Giorgio da Sebenico...
...as important as Giorgio Orsini da Sebenico and...
Giorgio da Sebenico...
Orsini, Giorgio, see Giorgio da Sebenico. 

- Now go and read WP:COMMONNAME. Is this you again Giovanni? Long time, no see!