The Times, Tuesday, Sep 07, 1937; pg. 9; Issue 47783; col D - mentions Ethel Jowsey, 23, a member of 'Petulengro's Gypsy Band', who was in court for stealing a bracelet from a Brighton boarding house.
From the 1957 will of 'Gypsy Petulengro', his real name was 'Mr Walter Leon Lloyd' (he died in 1957) - maybe the 'Leon Petulengro' that MaryA mentions? Apparently, his father, Walter Lloyd, went by Gipsy/Gypsy or Xavier Petulengro (he wrote some books). Leon Petulengro claimed his grandfather was Jasper Petulengro (ordinarly George Smith, Petulengro meaning 'Smith')