Hi Granmaa.
I'm new to the forum and the first thing I did was search on 'Harache', hence my reply to your spoon question.
There has been alot of activity among academics of the silver world regarding the Harache family, much of which has been published by the Huguenot Society (PROCEEDINGS- HUGUENOT SOCIETY OF GREAT BRITAIN AND IRELAND - 2005 VOL 28; NUMB 3; page(s)364-376) and also by The Silver Society (SILVER STUDIES - 2005 VOL 19; page(s) 71-77 and 2006 VOL 21 page(s) 8-9). A colleague and I (mainly my colleague!) have also edited the Wikipedia entry (
http://en.wikipedia.org/wiki/Harache) to recognise this more recent research, although the page does need more work.
Research is ongoing, so there may yet be further details about your maker.
.