Many critics and viewers believed that his genuine British accent on 'The Nanny (1993-1999)' was fake and commented that he should take advice from Daniel Davis, who is really American, on how to improve it.

Close friends with his The Nanny (1993) co-star Fran Drescher.

Became the fifth Baron Shaughnessy in December 2007 upon the death of his second cousin. The heir presumptive to the title is his brother, David Shaughnessy. The first baron was his great-grandfather, Thomas George Shaughnessy, the president of Canadian Pacific Railway.

With his brother David Shaughnessy, is in the process of starting "Busstop31 Productions".

He has two daughters with wife Susan Fallender; Jenny Johanna Shaughnessy and Madelyn Sarah Shaughnessy.

In 2002, Charles won an Emmy Award for Outstanding Performer in an Animated Program for playing Dennis on Stanley (2001).

Reprised his role of "Shane Donovan" on Days of Our Lives (1965). (November 2002)

Son of writer/director Alfred Shaughnessy and Jean Lodge.

Appearing as "Arthur" in Theatre Arts Productions presentation of "Camelot" in Tulsa, Oklahoma. The show also features former Miss America Susan Powell as "Guenevere". (July 2005)

On Broadway, in New York, starring in "Urinetown, The Musical" as Caldwell B. Cladwell until February 8, 2004. Has been doing the part since September, 9, 2003 (October 2003)

Brother-in-law of Deborah Fallender and Anne Schoettle.

Appearing in The Ogunquit Playhouse production of The Da Vinci Code Aug-Sept of 2023.