Numerous positions of honour were held by the Borja from that time forth, but the height of their glory was attained when Alonzo de Borja, who had gone to Naples in the train of King Alfonso of Aragon, was elected to succeed Nicholas V. as Pope in 1455. Of the several sisters of Alonzo de Borja--who on his election to the Papacy assumed the name Calixtus III.--Catalina married Juan Mila of Xativa, by whom she had two sons, Cardinal Juan del Mila and Perot del Mila, whose daughter Adriana was the wife of Ludovico Orsini and the kinswoman and confidante of the future Alexander VI., the son of Doña Isabella de Borja, another of the sisters of Calixtus III. Ever since the publication of Tomaso Tomasi’s “Duca Valentino” historians have repeated his statement that Caesar regarded Rodrigo Lenzuolo, or Lenzol, as his father--_Riconobbe per padre Cesare Borgia, detto poi il Valentino, Roderigo Lenzolio_.[10] Gregorovius says that Isabella, the sister of Alonzo, was the wife of Jofre Lanzol, a wealthy nobleman of Xativa, and that she was the mother of several daughters, all of whom remained in Spain, and of two sons, Pedro Luis and Rodrigo; and that Calixtus III., the uncle, adopted these two nephews and gave them the family name; thus the Lanzol became Borgia, the Italian form of the Spanish name Borja. If Tomasi, Panvinio, Mariana, and the later historians are correct in stating that Isabella’s husband was a Lanzol, their son, following the Spanish custom of uniting the mother’s family name with that of the father, would have been Rodrigo Lanzol y Borja and the descent from the Borja would have been through his mother only. But M. Charles Yriarte[11] conclusively shows that Rodrigo was Borja y Borja, doubly a Borgia, his father having been, not Jofre Lanzol, but Don Jofre de Borja y Doms, who married Isabella de Borja, sister of Calixtus III. Doms therefore was the name of Rodrigo’s paternal grandmother, and the shield with the three bands azure, which appears in all the arms of the Borgia, in all the monuments of the Este family, and in all Italian works on heraldry, is the escutcheon of the Doms and not of the Lanzol family, whose arms according to Fabrer were “azure with a sun argent in the first and or with a crescent argent in the second quarter”--a device which is never found in connection with the Borgia in either Spain or Italy.