Complex sentence: Orry-Kelly was the professional name of Orry George Kelly (31 December 1897--27 February 1964), a prominent Hollywood costume designer and was Australia's most prolific Oscar winner, having won three Academy Awards for Best Costume Design.
Split into simpler sentences: Orry-Kelly was the professional name of Orry George Kelly (31 December 1897--27 February 1964), a prominent Hollywood costume designer and. He was Australia's most prolific Oscar winner, having won three Academy Awards for Best Costume Design.