maybe Ton has seen this as its apparently in the Library at Ets Haim (my info may be way out of date) A survey done of the London community in 1684 by a Abraham Israel Zagache (in Spanish) when l say community l mean it includes even those that arent because they were not circumcised. A question here, it calls them Portuguese is it possible that even if they were Spanish they would be called Portuguese because of the Politics of the time.