Nobody knows where he was born or where he came from - as a small toddler, he was found at the doorstep of an orphanage in Melbourne, and that's the earliest memory he possesses. He only possessed his first name and the clothes on his body. Taken in by the caring staff, he grew up among the other orphans with no worry of not knowing his original parents. As such, his middle and last names were given to him by the orphanage, and his birth date is referring to the day that he was found.
He was never adopted, but he soon displayed magical capabilities. He was sent to Whitlam Bilby and Tallygarunga as the years progressed - instead of returning to the orphanage during breaks, he just lived in these institutions despite being under the legal guardianship of the government. He took to the situation like fish to water, as he was all too used to having no place to call his own.
Given his delicate situation he was always very well protected by those whom looked after him. It made him feel like his true parents were the staff from school, no matter how many they were; Tallygarunga was his family, and it helped giving him a sense of stability. When his parseltongue ability surfaced, however, in fear of it being traced to someone he didn't know, he decided not to reveal it so not to be uprooted from those he did deem his family.
As he graduated, he went on to VMU to study magizoology. Not being too ready to leave the area he's grown so fond of, however, he decided to take on a second degree as his current one is about to end - herbology. Could it be he does struggle with loneliness on an unconscious level?
As he enrolled in Herbology, a few things started to happen in his life that shifted his focus from it partially. Firstly, his long time friend and fellow apartment sharer, Bella Mayfield, decided to adopt a couple of bunnies alongside him - Charlotte and Carl - on top of the snake she already possessed; not wanting to have the apartment turn into a zoo, the landlord told them they should either get rid of the pets or leave. The pair ultimately opted to leave.
After a rather rushed search, they joined forces with Cole Lin and Natasha Roberts and returned to Narragyambie, renting out a considerably bigger apartment in the small town. Being in that small town made Mark very comfortable with where his life is at, and in a way, he started hoping things wouldn't change much further anytime soon.