He was also mentioned in What If, if one considers any references in that canon.Ben was never named in the MCU, but it's obvious there was a Ben who had recently died. There's two references to May dealing with loss in Civil War and Homecoming, and she wears a wedding ring around her neck. There's also the suitcase in FFH which in monogrammed 'BFP'. The general theory before NWH, and seems to have been solidified by it, is that there was a Ben, he died, but it was nothing to do with Peter or Spider-Man, just something like illness or accident.