If you are investigating ancestors in London, the organisation to turn
to is JGSGB, the Jewish Genealogical Society of Great Britain, which is
affiliated to JewisGen. We have a website and a discussion group where
you can pose quections and get knowledgeable advice.
My own advice would be to find out more about the couple's lives: His
trade or profession from censuses , the exact date of immigration
because, the passenger list of the boat they arrived on would give
clues to their town of origin. A signature on an image of an original
document would check the spelling of his name - and dictionary of
Jewish surnames could suggest possible places of origin.
St Albans, UK
St Albans, UK.