The work of Gutenberg will require a treatment different from that given to the work of Coster. It is not necessary to introduce the subject by a description of his books, by proof of his existence from writings made a century after his death, and, by a train of fine speculative reasoning, to show that he should have been the printer of the books ascribed to him by conjecture. Our knowledge of Gutenberg is incomplete, but it is positive as far as it goes. He did not put his name on any book, but he certainly printed many books; it does not appear that he ever boasted that he was the inventor of typography, but this honor was conceded to him by many printers soon after his death. His antagonists in courts of law, as well as the friends who put up tablets to his memory, have told us, as plainly as could be desired, that he was a master of many curious arts, and that he had made a broad and unmistakable mark on his time. There is no record of the birth of Gutenberg,[224] but it is the belief of his German biographers that he was born at Mentz about 1398 or 1399. His parents were, Frielo Gensfleisch and Else Gutenberg. Their two[225] children were, John Gutenberg,[226] named after his mother, and Frielo Gensfleisch. Frielo junior was always called Gensfleisch, but John, whose relation to the Gensfleisch family must have been well known, was sometimes described as John Gensfleisch, junior. A legal document of [p377] the city of Strasburg names him John, called Gensfleisch, alias Gutenberg, of Mentz.[227] The infancy and youth of Gutenberg were passed amid scenes of strife. In Mentz, as in many other cities of Germany, the burghers made persistent encroachments on the privileges of the noblemen, and met with as persistent resistance. The municipal disorder which followed their frequent collisions was seriously aggravated by the disputes of the rival archbishops who held office under rival popes. The burghers, as the larger body, claimed the larger share of the city offices, and the right to take the lead on occasions of ceremony and in the administration of affairs. In the year 1420, the burghers of Mentz made preparation for the entertainment of the Emperor, on the occasion of his visit to the city. Circumvented by the action of the noblemen, who greeted the Emperor first, the burghers retaliated by the destruction of the houses and goods of the more obnoxious nobles. In their rage, they demanded of them humiliating guarantees, and put them under restrictions so galling, that Frielo Gensfleisch and many others preferred to go in exile.[228] [p378] It is not known where the Gensfleisch family took refuge. It is supposed that Strasburg was the city selected, for this is the city in which we find the earliest notice of Gutenberg.