In some ways, that question is ridiculous. Ramsey and his ideas are embedded in so many fields of thought, from mathematics to economics to philosophy. However, I had never heard of him before. Or I should say, I had heard of him, but I never thought of him the way I thought of Russell or Wittgenstein or other contemporaries he had.
That might change now. There are two good pieces I recently found, here on CBC Radio and here in The New Yorker. I really enjoyed both. If you do too, you can get a recent book on him called, Frank Ramsey: A Sheer Excess of Powers
by Cheryl Misak.