Middle English was the form of the English language spoken from approximatley 1150 A.D. to 1470 A.D.  The Norman Conquest of England by William the Conqueror had just taken place in 1066 A.D. Writers from this period include Roger Bacon (1214 A.D. - 1294 A.D.) whose Opus majus (Major Work), was written in Medieval Latin at the request of Pope Clement IV, and explains the scope of his work. 

An example of Middle English would include the works of Geoffrey Chaucer, author of The Canterbury Tales. The Centerbury Tales are a collection of stories between 1387 and 1400 told by a group of pilgrims on their way to Canterbury, England to visit the shrine of St. Thomas Becket at Canterbury Cathdral. To read the works translated into modern English (much easier to read than Middle English), visit http://english.fsu.edu/canterbury/

Another author, Geoffrey Chaucer, 1340 A.D. - 1400 A.D. is known for writing the Canterbury Tales, a collection of 24 stories told by travelers on a pilgrimage from London to Canterbury to visit the shrine of Saint Thomas Becket.

Old English or Anglo Saxon, is the oldest known form of the English language and dates back to the Middle Ages. A web with readings in Old English as well as audio files can be found at http://www.arts.gla.ac.uk/stella/readings/OE/OE.HTM

The works of Shakespeare, even though there are some archaic words in his writings, are written in Modern English.

Old English was influenced by Scandinavian languages as a result of the Viking raids on northern England.

Old French refers to the French language as it was spoken from the 9th to the 15th century.

An on-line dictionary of Old French can be found at http://www.godswatcher.com/dicta.ht

Examples of works in Old French date from the Medieval period and include La Chancon de Roland (The Song of Roland) 1020, and the love letters of Heloise and Abelard from the 12th century.

Johnson, Tore, A Natural History of Latin, (2004)

Solodow, Joseph B. Latin Alive: the Survival of Latin in English and the Romance Languages (2010)