Eight years sounds about right to me. The way I look at it, Alphonse's family was probably just keeping their heads down low, and with Gustav's family, they really had nothing to do with anything (though Gustav himself certainly knows about the events).<br/><br/>Interestingly enough, Gustav would have fought against the Death Eaters, despite being a pure blood dark wizard. His opinion of them is that they were sloppy, and needlessly sloppy, and that they should have had higher standards of conduct.