I have a death certificate of a 6 year old Sarah SMITH who died at the metropolitan establishment {which I believe to be the Weekleys Metropolitan Establishment or Infirmary} at Margate 31st October 1861.

She does not appear to be any of the Sarahs of Sarah Janes born/baptised in Thanet as I have found them all with their parents or as servants in 1871.

Maybe Margate Library may have admission records for the Weekleys Metropolitan Establishment or Infirmary, which may help identify her, which I look into next week.