Marjorie was named Knuckey after the place in which she was born. She grew up and went to school in Belyuen. After finishing school at seventeen years old she began working in office and domestic jobs assisting the Manager. Marjorie moved on to helping the sisters make breakfast for little babies, eventually marrying and having five children. In 1991 she began working for the women's centre, cooking in the nutrition programs. During this time she began studying for a Diploma of Adult Education at Bachelor College.
Marjorie is an Elder of the Cox Peninusla community at Belyuen. In their customs Aboriginal men traditionally receive the songs of the group and it is rare for an Aboriginal woman to do so, and even rarer for them to sing them. However Marjorie has not only received songs, but has also sung them.