How old is the cast of The buried Life?

The cast of the Buried Life is as follows:

* Duncan Penn: 41 years old (born February 15, 1981)

* Dave Lingwood: 41 years old (born February 7, 1981)

* Jonnie Penn: 39 years old (born December 15, 1982)

* Ben Nemtin: 38 years old (born August 23, 1983)