Hi Windy
Your data would seem to come from the
Ipswich Journal, as given in one of the "Historical Snippets" at
http://thethreecups.com/historical-snippets about an inn named the Three Cups in Harwich:
To be SOLD to the best bidder, at the Sign of the Three Cups in Harwich, on the tenth of May, between the hours of two and five in the afternoon. A WINDMILL, about three or four years old, with all its appurtenances, situated at Arwarton, near Shotley - Gate in Suffolk, now in the occupation of widow Scarf. For further particulars enquire of Mr. Wm. Truelove, Baker, in Harwich. (The Ipswich Journal, 4th May 1765)
In Suffolk FHS transcripts and elsewhere nowadays, Arwarton is Erwarton, where Susan(nah) Coe married widower Jeremiah Scarfe in 1759. Their son James, baptised there in 1760, may have been buried at Chelmondiston in 1827 aged 68, having married Mary Lukess [Lucas?] at Erwarton in 1783 ("Scarffe"). Jeremiah Scarfe ("from gaol") was buried at Ipswich St Matthew on 21 May 1764. I don't know whether any of these people were millers but I see no more likely candidates.
David