https://www.dailymail.co.uk/news/article-6916101/British-stand-comedian-Ian-Cognito-sits-chair-lays-dies-late-night-show.html
Ian Cognito dies in the exact manner he joked about moments before his death. Knowing comedy and arts, I believe this WAS a suicide. Probably planned. I found nothing on the comedian's personal life or who he is closely related to.
https://en.m.wikipedia.org/wiki/Ian_Cognito