What does that look like, in practice? You have a family of four, and the father dies suddenly. What happens to the house? The wife re-marries, dies, and the se

What does that look like, in practice? You have a family of four, and the father dies suddenly. What happens to the house? The wife re-marries, dies, and the second husband re-marries. At what point is this 'reset' occurring? To whom does the wealth transfer when it is 'reset'?