He was born to Italian parents who were immigrants to the United States.
After moving to South Korea, he gave himself a Korean name "Tae Hyeon Jun (태현준)" with his Korean last name "Tae" inspired by his original family name "Tetto."[citation needed]
He is known to be living in a traditional Korean house (hanok) located in Bukchon, Seoul.
The beautifully designed and structured interiors of his house and his private collection of ancient Korean porcelains were often featured in TV shows.
He also named his house as "Pyeonghaengjae" which can be translated as "parallel' in Korean with the intention of also referring to a place where many people and friends can peacefully interact in a parallel space surrounded by nature.[5]
Mark has recently reported that he has been engaged in learning the Korean string instrument, gayageum.
Due to appearances in April 2015, on the Non-Summit spin-off Where Is My Friend's Home, in Nepal, and the subsequent April 2015 Nepal earthquake and the May 2015 Nepal earthquake, he became a spokesperson for JTBC and the two television shows, along with Nepalese cast member Sujan Shakya, for outreach.[9]