By the way something to blow everyone's mind.
Remember the title of the Spectacular Spider-Man story arc that JMD wrote on Harry. It's called "The Child Within". The word "Kind" in Kindred is German for child.
And Harry is Norman's child, and Kindred can sound like Kind + Dread, i.e. "fear of the child".
And of course the word dread (or dred) and dead have a morphic similarity. so it also conjures "the dead child".
Harry Osborn is the dead kind who has become a figure of dread.