In the 13th century, John of Ibelin drew up a list of fiefs and the number of knights owed by each, but this gives no indication of the non-noble, non-Latin population.
在13世纪，伊贝林的约翰制定了一份各封地及每片封地上拥有骑士数量的清单，但是其中并没有给出非贵族、非拉丁人口的情况。