My Young ancestors apparently lived on Bruny for a time - William Young and his family. There was some mention that he was a whaler.
Also my gguncle Rev. Walter Hurburgh was probably born there, and lived at Barnes Bay later in his life. He was the son of James Hurburgh, pilot at Pierson's Point from the late 1840's to 1879.
I have more biographical details on the Hurburghs, but nothing except the BDM data on the Youngs.