The best known Welsh comedian working in English is probably Rob Brydon at the moment.
There are better comedians working in Welsh (Dewi Pws for one), but you don't get famous in Welsh.
She was a comedian most famous for the I Love Lucy Show in the 1950s
Tony Rock is probably most famous for being the brother of comedian, Chris Rock. However, he is a comedian in his own right and has been performing for several years.
By no means! It's difficult to say who the most famous person in Wales is today, and it could be down to a matter of opinion- some might say Wales's First Minister Carwyn Jones, others might say one of Wales's past or present rugby stars such as Barry John or Gareth Edwards, still more might say entertainers like opera singer Bryn Terfel or comedian Max Boyce. I think it depends upon where your main interests lie.
Cardiff castle
Yes,
Steve Martin is probably the most famous comedian banjo player. Billy Connolly the Scottish comedian also plays banjo.
yes he is. He is one of the most famous comedian actors
Ronnie barker
Kevin hart
Kermit
Prince Charles - Prince of Wales
Joe Piscopo is a famous American actor and comedian. He is most famous for his work on Saturday Night Live, where he has played multiple recurring characters.