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The alternate name for this island is Timana Island.
In 1770 Captain James Cook discovered The Family Group of Islands. The largest he named "The Father Isle" and titled it Dunk Island, the second largest he named "The Mother Isle", now Bedarra, and the smallest islands where the children, Timana Island the baby, the Twins and the triplets. Thorpe is privately owned with one residence. This is one of only several Australian islands which are owned Freehold .