Several years ago I was in the house of a family connected to mine by marriage. In the room were a man, his wife, brother, sister and several children. As the man's mother had been married to my grandfather's uncle I asked when she died (I didn't have a date in my records as she had remarried after uncle died) and I've never seen such panic. First they could hardly remember if woman or 2nd husband had died first, children were sent to look under stairs for date house was built once they decided mother had died before they moved into house and on it went. Never did get a date from them but they all agreed they should put up a headstone some day!