content: I don't know the story well but...  A myth that the Spandau prisoner was not actually Hess was disproved in 2019, when a study of DNA testing undertaken by Sherman McCall, formerly of the Walter Reed Army Medical Center, and Jan Cemper-Kiesslich of the University of Salzburg demonstrated a 99.99 per cent match between the prisoner's y chromosome DNA markers and those of a living male Hess relative.[154]  The Y chromosome doesn't undergo cross over so is relatively static. There isn't a second Y chromosome to crossover with. This is basically pseudo-science and it's on wikipedia. It wouldn't be applicable in a court of law. In my mind that fact that they wen't by the Y-Chromosome, in 2019 no less where that is not a limit, proves to me that he didn't match with his relatives! Matching Y chromosomes is like matching eye colour. It's not particularly reliable. Two people both having blue eyes does not prove they're closely related. My Y-Chromosome is a 99.99% match with tens of millions of Europeans separated ancestrally for many thousands of years, over ten thousand years. Les conclusive but I swear this looks like a wax model.