If so it wouldn't matter whether the "husband" died before his parents or shortly afterwards. Either way the property wouldn't pass to him and therefore not to his children.Im
I’m not so sure about this. I agree about the risk of any siblings of the husband inheriting, but the properly drafted Australian wills I’ve read all state that beneficiaries must survive the deceased by a certain period, exceeding a few days (I think it is typically 28 days).
(Of course there might be a pair of wills that benefit the grandchildren directly.)