Anglo-Saxon Linguistic Purism is the attempt to avoid the use of foreign terms, primarily of Greek, Latin, and French origin, in English. According to Wikipedia, this first began (and failed) after the Norman Conquest. It rose again as an organized movement in Early Modern English, roughly the time of Shakespeare, as a response to perceived pretentiousness, and again in the nineteenth century and intermittently since then, attracting the support of figures like Dickens and Orwell.
More recently it has enjoyed use by fiction writers and Internet People. There is an Anglish Wiki which has purified versions of famous texts, including Darwin's Origin of Species (or Inlead to The Wellspring of Breedstocks):
When on board H.T.S. Beagle, as wildloreman, I was much struck with sundry truths in the fordealing of the lifefast beings bewoning Southamericksland, and in the earthkithy kinships of the andward to the beleeringly onerdands of that earthdeal. These deedsakes, as will be seen in the latter headstutches of this book, seemed to throw some light on the frumshaft of kins - that unknown of unknowns, as it has been called by one of our greatest outhwiten. On my edwhirft home, it came to me, in 1837, that something might well be made out on this frain by longmoodly heaping and bethinking on all kinds of deedsakes which could eath have any bearing on it. After five years' work I let myself huy on the underwarp, and drew up some short ontokenings; these I greatened in 1844 into an outline of the upshots, which then seemed to me likely: from that timestretch to the andward day have I steadily forfollowed the same goal. I hope that I may be forgiven for inputting on these my own selfly indelves, as I give them to show that I have not been hasty in coming to a bychoice.
Further translations include portions of Hamlet, The Bible, and the works of HP Lovecraft. Ψ