'Share on Twitter' Abraham Rabinowitz and Bertha Yesersky Joseph Rabinowitz death certificate reveals the names of his parents Aug 13, 2009 0 Comment Commentary to come. Machinist The chief poobah at Family History Machine is Dan Ruby, aka Machinist. He created FHM as a tool to present his own family history, then opened the platform for other family storytellers to do the same. PreviousNext Story Portfolio Explore Themes Sources & Methods No results vital records