Collectanea Cornubiensia – A Collection of Biographical and Topographical Notes relating to the County of Cornwall. (George Clement Boase, printed 1890).
The pages listed refer to the Cornish Milletts of Marazion.
There is a possible connection with our family tree drawn up by RO Millett in c1889. It could be he obtained the information through a friendship with George Clement Boase, or the flow of information might have been the other way round. Rather less romantically, he purchased the book!
As is often the case when obtaining information of this age it does throw up some discrepancies, but then that’s genealogy for you.