Some Dates on the History of the English Language and the English Vocabulary

Time History Language
centuries BC Celtic tribes on the British isles traces of their language in place-names:
55/54 BC-AD 410 romanization
449 Angles, Saxons, Jutes from Northern Germany and Southern Scandinavia arrive on the British isles beginning of Old English period; early Latin influences:
since 6th c. christianization under Irish monks and St. Augustin Latin influence:



8th c. Benedictine Reform first documents in Latin alphabet (instead of runes); further Latin influence:
8th/9th c. the Vikings invade the Anglo-Saxon territories Scandinavian influence:



878 Alfread the Great (871-899) beats the Vikings --> cultural bloom
late 10th/early 11th c. new attempts by Vikings to conquer England
1066 the Normans under William the Conqueror conquer England under King Harold in the Battle of Hastings beginning of the Middle English period
influence from Northern French:




13th-15th c. French rulers lack contact with home country --> John Lackland: last Norman king influence from Parisian French:



14th c. English becomes the official language at court and at school; Geoffrey Chaucer writes the Canterbury Tales influence from other languages:




1424-1471 William Caxton distributes the English language in printed form and influences the standardization process (the dialect around London becomes the basis for our modern standard variety)
16th/17th c. William Shakespeare (1564-1616) writes The Merchant of Venice, Romeo and Juliet, Othello, Macbeth, a.m.o. Early Modern English period
1621 Mayflower lands on America's east coast this marks the beginning of the split of English into BrE, AmE, and later also other national varieties; language influence from other colonializing and colonialized nations:




1755 Samuel Johnson publishes his first dictionary in Britain
1776 American Declaration of Independence
1783ff./1828 Noah Webster publishes his first grammars in America and later his dictionary


The following list gives examples for each of the influencing languages in question (to be used by the referent):


References 

BAMMESBERGER Alfred (1984), English Etymology. Heidelberg: Winter.
BAUGH Albert C. / CABLE Thomas (1991), A History of the English Language. London: Routledge & Kegan Paul.
SCHELER Manfred (1977), Der englische Wortschatz. Berlin: Schmitt.