British American usually refers to Americans whose ancestral origin originates wholly or partly in the United Kingdom (England, Scotland, Wales, Northern Ireland, Cornwall, Orkney, and the Isle of Man). It is primarily a demographic or historical research category for people who have at least partial descent from peoples of Great Britain and the modern United Kingdom, i.e. English, Scottish, Welsh, Scotch-Irish, Orcadian, Manx, and Cornish Americans. Based on 2020 American Community Survey estimates, 1,934,397 individuals identified as having British ancestry, while a further 25,213,619 identified as having English ancestry, 5,298,861 Scottish ancestry and 1,851,256 Welsh ancestry. The total of these groups, at 34,298,133, was 10.5% of the total population. A further 31,518,129 individuals identified as having Irish ancestry, but this is not differentiated between modern Northern Ireland and the Republic of Ireland. Figures for Manx and Cornish ancestries are not separately reported, although Manx was reported prior to 1990, numbering 9,220 on the 1980 census. This figure also does not include people reporting ancestries in countries with majority or plurality British ancestries, such as New Zealander (21,575) or Australian (105,152). There has been a significant drop overall, especially from the 1980 census where 49.59 million people reported English ancestry. Demographers regard current figures as a serious under-count, as a large proportion of Americans of British descent have a tendency to identify as 'American' since 1980 where over 13.3 million or 5.9% of the total U.S. population self-identified as "American" or "United States", this was counted under "not specified". This response is highly overrepresented in the Upland South, a region settled historically by the British. Those of mixed European ancestry may identify with a more recent and differentiated ethnic group. Of the top ten family names in the United States (2010), seven have English origins or having possible mixed British Isles heritage, the other three being of Spanish origin. Not to be confused are cases when the term is also used in an entirely different (although possibly overlapping) sense to refer to people who are dual citizens of both the United Kingdom and the United States. Sense of heritage Americans of British heritage are often seen, and identify, as simply "American" due to the many historic, linguistic and cultural ties between Great Britain and the U.S. and their influence on the country's population. A leading specialist, Charlotte Erickson, found them to be ethnically "invisible". This may be due to the early