Almanzo \a-lman-zo, al-ma-nzo\ as a boy's name is of Old German origin, and the meaning of Almanzo is "precious man". Surname. Famous from the "Little House" books: Almanzo Wilder tells Laura that a distant English ancestor's life had been saved during the Crusades by an Arab named El Manzoor. "They changed it after a while in England, but I guess there's no way to improve it much". It appears a hundred years ago parents also made fanciful choices for names.