Back in the day, FIL was convicted of and spent 18 months in prison for a felony. He was pardoned, so he has the distinction of being an ex-con but not a felon. Anyway, MIL knows, H and his brother have known since they were little, I've known since pretty much the day I met FIL, our kids will know (we've already discussed it). My parents do not know. FIL doesn't particularly care if they know, but H and I hope they go to their graves without this information. Things could get difficult when we have big-mouthed children.