The founder population that settled in Bermuda between 1609 and the 1630s was almost entirely English. Typical Bermudian surnames that date to the Seventeenth Century indicate that the primary area of England from which settlers were sourced during that period was East Anglia. This ancestry is shared, today, by both white and black Bermudians (the latter demographic group, as noted above, being made up of individuals of a blend of African, European and Native American ancestry, though not necessarily in that order). A continuous inward flow of immigrants from other parts of the British Isles, other British (or formerly British) territories, and foreign countries has added to the white population over the centuries, including sustained immigration from Portuguese Atlantic islands from the 1840s, and numerous Royal Navy and British Army personnel who were discharged and remained in Bermuda to contribute to the permanent population (white and multi-racial). The white population (that is, those Bermudians presumed to be entirely of European ancestry) has consequently grown more diverse. No genetic study has as yet been conducted either of or including the white population of Bermuda. Although European ancestry is the largest component of Bermuda's ancestry, and those entirely of European ancestry are by far the largest mono-racial group (based on actual ancestry, rather than self-identification), whites (and the European ancestry of blacks) are often excluded when Bermuda's source populations are discussed. By example, National Geographic's Genographic Project Reference Population (Geno 2.0 Next Generation) for "Bermudian" (as of 28 June 2020) was described on its website (which was taken offline after 30 June 2020) as "based on samples collected from mixed populations living in Bermuda" (this was not based on a survey of even the mixed, or other-than-entirely-European population, of Bermuda, as no such survey of all of Bermuda has been carried out).