In October 1815 Robert Millett, Jnr. was present at the marriage of his sister Mary to Peter Roskilly in St. Hilary, Cornwall.
In 1818 Robert Millett became a beneficiary of the will of his late aunt Anna Millett of Marazion, spinster, receiving her black-enamelled gold ring and four silver table spoons.
In 1819 Robert Millett, the only son, was sole executor and residuary legatee of his father's will.
In October 1824 Robert Millett was present at the marriage of his sister Anne to John Hosking in St. Hilary, Cornwall.
In 1841 Robert Millett, aged about 50, born in the county, tallow chandler, and wife Ann Millett, aged about 45, were living in Fore Street, St. Hilary, Cornwall. With them were children Robert (20), merchant's clerk, Leonard (15), apprentice saddler, Jane (15), William (15), tin & copper mine clerk, Mary (12), Philip (7) and Thomas (5).
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Robert Millett of Marazion died aged 56 years (burial record).
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17th inst., at Marazion, Mr. Robert Millett, aged 56 years.
The Penzance Gazette and West Cornwall Advertiser, 21 Aug 1844, p. 4