Re: Langleys from England formally Ottolangui
You may have discovered by now that there is a family website for Ottolangui/Ottolenghe at http://www.ottolangui.org/http://www.ottolangui.org/. It seems that the Ottolanguis are a jewish family out of Italy some of who changed their name to Langley when they emigrated from Italy to England. The site appears excellent.
I myself am not related to Ottolangui, but ran across the site while researching for a research project on a general history of the Langley family to its origins.