I wonder if your meeting with the great great grand-daughter of the famous John T Carrodus provided any fruitful connection to the Thomas who migrated to Australia. Besides the violinist John Tiplady Carrodus there was another John Tiplady Carrodus who was a hairdresser and married an Elizabeth Fox and had a daughter Mary Fox on 2 Sep 1839. I had this Mary confused with the daughter Mary of Thomas & Anne and I have her birth certificate. I have a feeling that all these Carrodus' are connected somehow but just can't find the link. If you find the connection let me know as I can give you the descendants of Thomas & Anne in Australia.