Hello there,
Re the graves in Stoke St Michael, these are what I noted down on my visit:
Levi Treasure died 21/04/1947, aged 85. In the same grave Alice Treausre, wife of Levi, died 11/07/1954, aged 87.
Theophilus Treasure died 23/03/1924, aged 87. In the same grave, Sarah Treasure wife of Theophilus, died 01/03/1912, aged 83.
Mark James Treasure died 20/04/1922, aged 83.
Thirza Treasure, died 19/01/1934, aged 95.
I don't think this is the same Levi Treasure as you mention.
Jo