Speaking about his family, Joe Kirby is the son of Roger Kirby ad Jae Kirby.

He has two sisters named Vanessa Kirby and Juliet Kirby. Vanessa is a well-known British actress.

She has won a British Academy Television Award, a Volpi Cup Award, and nominated for an Academy Award, a Golden Globe Award, a Primetime Emmy Award, and two Screen Actors Guild Awards.

His father is a surgeon, while there are o details about his mother on the web.