Four sources affirm that he died in Bolton. No posted source proves or explains death in Colchester.
The New England Historical & Genealogical Register, 1847-2011 [https://www.ancestry.com/discoveryui-content/view/130018:2129?ssrc=... Ancestry.com]
"Connecticut Deaths and Burials, 1772–1934." Index entries derived from digital copies of original and compiled records [https://www.ancestry.com/discoveryui-content/view/2196311:2557?ssrc... Ancestry.com]
Connecticut, U.S., Church Record Abstracts, 1630-1920, Volume 8 Bolton. [https://www.ancestry.com/imageviewer/collections/3032/images/41107_... Ancestry.com]
https://www.findagrave.com/memorial/58870253/thomas-loomis