He described the "Improbable Birth of" his home country in A Commonwealth of Thieves, while one of his novels about that country sees the titular half-Aborigine flip out and kill two families after being cheated out of money.  
This author wrote about the negotiations between Matthias Erzberger and Ferdinand Foch at Versailles in one novel, while another of his works sees Anthony Piers investigate the strangulation of Victor Henneker on an Antarctic expedition. In addition to Gossip from the Forest and A Victim of the Aurora, he wrote a novel in which Usaph Bumpass and Decatur Cate serve in the forces of Stonewall Jackson, [?] Confederates. He described the "Improbable Birth of" his home country in A Commonwealth of Thieves, while one of his novels about that country sees the titular half-Aborigine flip out and kill two families after being cheated out of money.  For 10 points, identify this Australian author of The Chant of Jimmie Blacksmith who won the 1982 Booker Prize for a novel in which a dude saves a bunch of Jews, Schindler's Ark.
This author wrote about the negotiations between Matthias Erzberger and Ferdinand Foch at Versailles in one novel, while another of his works sees Anthony Piers investigate the strangulation of Victor Henneker on an Antarctic expedition.
Thomas {Keneally}