Apparently the chief and most voluminous translator of astrological works from Arabic into Latin in the twelfth century was John of Seville.[177] Although he translated some other mathematical, medical, and philosophical treatises, the majority of his translations seem to have been astrological, and they remained in use during the later middle ages and many of them appeared in print in early editions. So many Johns[178] are mentioned in medieval manuscripts and even wrote in almost the same fields as John of Seville that it is not easy to distinguish his works. Jourdain identified him with a John Avendeath or Avendehut (Joannes ibn David) who worked with the archdeacon Gundissalinus under the patronage of Raymond, archbishop of Toledo from 1126 to 1151.[179] John of Seville was perhaps not the man who worked with Gundissalinus[180] but he certainly appears to have addressed translations to Archbishop Raymond. Thus in speaking of Costa ben Luca’s _De differentia spiritus et animae_ we saw that the manuscripts stated that it was translated by John of Seville from Arabic into Latin for Archbishop Raymond of Toledo.[181] John of Seville is further styled of Luna or Limia, in one manuscript as bishop of Luna,[182] and also seems to be the same person as John of Toledo or of Spain. In one of the citations of the _Speculum astronomiae_ of Albertus Magnus he is called “Joannes Ulgembus Hispalensis.”[183] John Paulinus, who translated a collection of twelve experiments with snakeskin entitled _Life-saver_ which he discovered when he “was in Alexandria, a city of the Egyptians,” is in at least one manuscript of his translation identified with John of Spain.[184] [Sidenote: Dates in his career.]