The discovery did not come through a family revelation, but during an online search that began after Lenkeit watched a documentary about the Nazis. Wanting to learn more, he continued researching and came across a website featuring a photograph of his maternal grandmother, Hedwig Potthast. The caption beneath the image identified her as Himmler’s companion. According to a report by Sky News, Lenkeit said that this was the moment he began to piece together information he had never known existed. Further research led him to conclude that Himmler was the biological father of his mother and, therefore, his own grandfather....