In order to separate out SURNAME interests from other material could we have a dedicated hashtag (called e.g. "INTERESTS") and use subject title in the style of? NAME, AREA , DATE RANGE with a standard separator.
Example Subjects :? MAN(N) : RYEDALE: to 1800
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?NICHOLSON : RYEDALE: to 1800
This should allow relatively? sifting of received emails to those most relevant