Hi Grainger
You really need to tell us a little bit more about Grace and Richard. From the information you gave I deduce that they were born in the Chester-le-street registration district and both died in the Chelmsford, Essex, registration district. Further Grace's death was registered as that of Grace Winifred A Turner, so she probably married at least once.
So, where in Chester-le-street were they born and where in the Chelmsford district did they die. Do you know when they moved from Durham to Chelmsford? Perhaps you should link this query to the Essex board.
Good luck
Gobbo