Re: Re: reply
http://www.dictionary.com/cgi-bin/dict.pl?term=british
Brit·ish (brtsh)
adj.
Of or relating to Great Britain or its people, language, or culture.
Of or relating to the United Kingdom or the Commonwealth of Nations.
Of or relating to the ancient Britons.
n.
(used with a pl. verb) The people of Great Britain.
British English.
The Celtic language of the ancient Britons.
Originally posted by Heyesey
Anyone from the British Isles can legitimately be called British (including those from the Republic of Ireland, although they probably wouldn't appreciate it)
What a heap of crap

The term "British" is a national one, and would refer to citizens of Great Britain. Now, as all RofI citizens are extended the curtesy of being automatically granted British citizenship, then those who chose to take it are British. However, living in the British Isles does not make somebody British, or do you imply that all foreign residents are also British?
Case in point, the British Lions, which includes rugby players from the Republic
The Lions predate Irish Independence. It's another anachronism of the intertwined relationship between Britain and Ireland. Why would you use a sports team to prove a case of a geographical label? It's a national/political grouping.
Back to the subject, hands down I would say Shakespeare. Too many other candidates for second place to list, but no one on earth has had the cultural impact, or the literary genius. Just including his part time hobby, writing sonnets, puts him among the great writers.