He was born around 1915 at Malworn, between the Gumaderr and Liverpool Rivers,[1] in West Arnhem Land, growing up primarily in a traditional lifestyle despite short periods spent at school in Gunbalanya and on Goulburn Island.
In a 2008 Sydney auction hosted by Bill Evans, one of Bobby's traditionally renditioned bark paintings attracted a sale of $2186.
[5] As he became more developed and respected as an artist he began teaching younger generations, including his nephew Robin and Bruce Nabekeyo who both went on to elaborate upon the use of rarrk.
During his association with Dorothy Bennett and discussion of the Kluge-Ruhe commission, Nganjmirra decided to endorse the major step to incorporate the introduction of paper into the art centre.
The transition to paper also allowed for newer artists to paint smaller subject matter and ideas of Nganjmirra's larger artworks.
Copies of this book were printed in Kunwinjku and English, providing a rich opportunity for the study of language and culture.
Nganjmirra is acknowledged in Peter John Carroll's thesis, Kunwinjku: A Language of Western Arnhem Land, through the stories relayed and interpreted through his bark paintings.
They also stated that human choice and increased tropical storms due to climate change have impacted the paintings.