http://en.wikipedia.org/wiki/Louis,_Duke_of_Savoy
...He married at Chambéry on 1 November 1433 (or 12 February 1434) Anne of Cyprus, a Princess and an heiress of Cyprus and Jerusalem...
http://www.chivalricorders.org/royalty/gotha/savoyhis.htm
...Louis, Duke of Savoy (d 1465), claimed the throne of Cyprus, Armenia and Jerusalem by right of his wife Anne of Lusignan...
Titles of the King: King of Italy, Sardinia, Cyprus, Jerusalem and Armenia,
может, отсюда и Ерусалим?