anachronism

n. assigning of a person or event to the wrong time period; something that is obsolete or out of date

For the card strategy game, see Anachronism (game). An anachronism (from the Greek "ανά," "against," and "χρόνος," "time") is anything that is temporally incongruous—that is, it appears in a temporal context in which it seems sufficiently out of place as to be peculiar, incomprehensible or impossible. The item is often an object, but may be a verbal expression, a technology, a philosophical idea, a musical style, a material, a custom, or anything else closely enough bound to a particular period as to seem odd outside it.
See more at Wikipedia.org...

Noun
1. something located at a time when it could not have existed or occurred
(synonym) mistiming, misdating
(hypernym) timekeeping
2. an artifact that belongs to another time
(hypernym) artifact, artefact
3. a person who seems to be displaced in time; who belongs to another age
(hypernym) anomaly, unusual person

(n.)
A misplacing or error in the order of time; an error in chronology by which events are misplaced in regard to each other, esp. one by which an event is placed too early; falsification of chronological relation.
  

The largest of the medieval ‘re-enactment’ societies,established in 1968 at the home of Diana Paxton. The Society has grown to more than 40,000 members worldwide, encompassing medieval society in Europe and the Middle East from roughly 600 A.D. to roughly 1600 AD.

The SCA has developed its own combat system, where wooden weapons simulate the whalebone and ash weapons used in medieval béhourds or vespers tourneys. In the SCA system, combatants are responsible for their calling their own ‘blows’, a technique that attempts to place the
responsibility for their field conduct squarely on the combatant themselves instead of a panel of judges. Marshals watch over the combat to insure that the tone of the fight is chivalric and that the rules of safety are not violated, as well as tending to the administration of registering combatants and the like. This ‘medieval marshal art’ has become immensely popular in the United States, with active branches in Australia, Japan, Korea, Britain, Germany, Sweden, and Canada. At its finest, the Society strives to use the martial system to teach chivalric virtues, a place where the curious can come and experience something of the medieval experience. Knights in the SCA are made by the king in recognition of their prowess , courtesy , and noble demeanor; knights often take ‘squires’ , less expert combatants who wish to learn the chivalric arts. At the pinnacle of the martial experience combatants can participate in and strive to become victorious in Crown tournament , earning a higher level of noble rank.More...