Neil Patrick Harris (born June 15, 1973) is an American actor, writer, producer, comedian, magician, and singer. He is known primarily for his comedy roles on television and his dramatic and musical stage roles. On television, he is known for playing the title character on Doogie Howser, M.D. (1989 -- 1993), Barney Stinson on How I Met Your Mother (2005 -- 2014, for which he was nominated for four Emmy Awards), and Count Olaf on A Series of Unfortunate Events (2017 --).

Barney in how i met your mother real name? OK. Let's think. My stream of consciousness:
The relevant information to answer the above question is: On television, he is known for playing the title character on Doogie Howser, M.D. (1989 -- 1993), Barney Stinson on How I Met Your Mother (2005 -- 2014, for which he was nominated for four Emmy Awards), and Count Olaf on A Series of Unfortunate Events (2017 --). The answer is Neil Patrick Harris.