post as you really should read it yourself, but here are a few points I'd like to bring up.
The hero of the day as far as introducing sea turtle to the glitterati of England was George Anson, 1st Baron Anson. Pictured above, the Royal Navy man became famous and wealthy after raiding Spanish territories and ships in South and Central America. These endeavors were followed by a circumnavigation of the globe that earned Anson a comparison to Francis Drake.
Anson, who wrote a best seller about his adventures entitled A Voyage Round the World, hit some questionable bumps in the road on his much acclaimed journey. He wrecked ships; the loss of HMS Wager and subsequent stranding of several of his men created much speculation. More importantly, he lost men. His squadron of six men-of-war left Portsmouth with a complement of over 1,000 sailors in 1740; only 188 men returned to Spithead in 1744.
Despite these unfortunate circumstances, Anson managed to return to England a wealthy man after capturing a number of Spanish ships in the West Indies and negotiating lucrative trade deals in China. He seems to have talked a good game, too. Rather than reprimand or courts martial for his losses, Anson was made 1st Baron Anson in 1747 and elevated to the station of First Lord of the Admiralty.
He also brought back tales of the excellent taste and restorative effects of the meat and fat of sea turtles. Having experienced these things first hand, and then written about them in his book, he became more than just a gastronome suggesting a new delicacy. Anson, to one degree or another, became the "turtle king". He gifted huge turtles imported at his own expense to such high society organizations as White's Chocolate House and the Thursday's Club. Soon enough, sea turtle became all the rage and Anson was given credit for introducing Brits to a taste sensation that was once thought to be only fit for common seamen and down right pirates.
As an aside, or perhaps an addendum, you can find an excellent discussion of buccaneers and sea turtles here. Scroll down to the comments and find Benerson Little's thoughts on the points made. If anyone knows whereof they speak on the subject, it is certainly he.
Header: George Anson, 1st Baron Anson, contemporary portrait by an unknown artist via Wikipedia