My mother's maiden name is Shackleton and we've grown up in Mackay, Queensland, Australia. Have been told my whole life that i was related to Sir Ernest but never really knew how. As of now i can tell you that my Grandfather's name was Clarie Shackleton. I believe he was born in Mackay, not sure when he was born but he died in 1981(before I was born). I'm guessing he was in his 70's then. My mum would know alot more so i'll ask here more if interested.