A pretty long question with an easy answer

"Christopher Little grew up in Yorkshire (educated at Queen Elizabeth Grammar School Wakefield) and began his working life in textiles in the then West Riding. In the early sixties he lived in Paris and then worked his way out to the Far East doing various jobs in Thailand, Malaya, Singapore and Borneo, finally arriving in Hong Kong in 1966 where he spent 9 years initially working in textiles and then in the sales of financial products, and trading, all of which involved extensive travel through Asia.

Returning to the UK in 1975 he opened a London based recruitment / headhunting business supplying professionals to companies worldwide, and this continued into the 90’s. However, in 1979, and initially as a hobby, Christopher was persuaded by his long-time friend Philip Nicholson, pka A J Quinnell, to represent him as his literary agent for his first novelMan on Fire, and this was a great success. Representing creative writers became his passion, and in the early 90’s Christopher sold his headhunting business to concentrate on further expanding his literary agency full time."

Well that was things so far.Now for the question...

In 1995 he was approached by a world famous author,x, who then was poor and struggling to write and publish her books(which is such an irony).He suddenly got an English publishing house to publish the book and its sequel which eventually grew up to e successful.However in 2011 X closed all partnership with Christopher and his group.

Id the famous books by X which was brought in to the world by Christopher Little and his company.

Answer:X-J K Rowling
Y-Harry Potter