Robert Trump had reportedly been hospitalized in the intensive care unit for several days that same month . When he worked in the Trump Organization, he was known as the nice Trump," Gwenda Blair, a Trump family biographer, told The Associated Press. A Boston University graduate, Robert Trump later managed the Brooklyn portion of father Fred Trump's real estate empire, which was eventually sold. Once a regular boldface name in Manhattans social pages, Robert Trump had kept a lower profile in recent years. Before divorcing his first wife, Blaine Trump, more than a decade ago, Robert Trump had been active on Manhattans Upper East Side charity circuit.