Ruskie, my Gypsy ancestors did intermarry with only a few other families -- the Smiths, Richardsons and Lovedays. (My original post goes into some detail.) The family's surnames were Browett, Blades, Frisby, Mitchell, Sculthorpe, Woodcock, Sharman, Wright.
I am hoping someone more knowledgeable than me will tell me if these are Gypsy/Traveller names.
Yes, I've traced my grandparents' lives in England. They met and begin "walking out together" at age 16. It was my grandmother who told me her family wouldn't allow a marriage because of my grandfather's Gypsy lineage. In 1919, when my grandparents were 27 (and still not married), they sailed from Southampton to New York. They married in 1920 at the age 28.
As to the ethnicity percentages, I assumed there would be something indicating possible Romany heritage or a greater percentage of Irish ancestry, but I actually understand little about it and am probably misguided.
I'm not doubting the Gypsy heritage in my family. I believe there is sufficient evidence. I'm just wishing I knew what kind of Gypsies/Travellers they were. I guess my original question, "What makes someone a Gypsy?," is more philosophical than literal. Thanks for your help!