[1] Mynhardt was born in Johannesburg and lived in a Wynberg army camp, where his father was a padre.

[2] As well as appearing in several films and several television projects, Mynhardt was also known for his work in both South African and British theatre.

[2] After the end of school, he started appearing in theatre productions across South Africa.

[2] He admitted that he learnt true professionalism in the 1930s, when he was performing in the Old Vic in London and sharing a flat with Alec Guinness.

[2] His credits included appearing in Dingaka, a 1965 film by the acclaimed South African director, Jamie Uys.