Was born and raised on a sheep and cattle station in Queensland
Became a keen sportsman at high school, representing the school in several sports including rugby union, which he played at state level for Queensland in the late 1960s
Made his television debut as host of late night folk music programme Around Folk in 1973
Made his acting debut as Kurt Fisher in a 1973 episode of Matlock Police
Holds a Guinness World Record as the longest-serving actor in an Australian Serial for his role as Alf Stewart in Home and Away
His surname is pronounced "Marr"
Was awarded a Medal of the Order of Australia in the Australia Day 2017 Honours for his service to the performimg arts as an actor
Won the 2018 Logie Award for Most Popular Actor for his role as Alf Stewart in Home and Away
As of 2019, has played the role of Alf Stewart in Home and Away since 1988