I have recently got married but I was a Marriott.My part of the family are from Wellingborough,Northants.Details are sketchy from members of my family, but the details you have mentioned are familiar to me.It seems that we are part of the Marriotts that you belong to!! My Grandfather was Eric Marriott one of five boys.I believe that his father came from covent garden. The name Ada gadd rings a bell.If you contact me with any questions or names I will see if I can find anything out. We have always been lead to believe that we are "Italian" in some way, and we all have a strong mediteranian look. But we have never known for sure so do you have further info about the Italy connection??hope to hear soon.