[First of an occasional series]
The wanderings of primitive peoples are one of the great romances of history, made more romantic and mysterious by the shortage of direct evidence. Somehow, somewhen the Indo-European languages reached points as far separated as the Ganges River valley and the British Isles, and the cultivation of plants spread from a handful of locations to the entire world. Other languages and technologies, too, wandered far from their birth places. No one recorded the ways and means. We do not know what to attribute to mass migrations, what to the travels of a few artisans, what to the adoption of techniques from neighbors, what to independent invention. Did agriculturalists and metal workers colonize new territories, driving out or exterminating the aboriginal inhabitants, or did such advances spread through peaceable interchange? Can we trace mass migrations in the prehistory of language, or only the success of an elite dialect or commercial lingua franca? Parallels in recorded history show that many causes can produce identical effects. English prevailed in North America and Australia, because the indigenes were overwhelmed by migrants, Latin in Western Europe because it was the language of the Roman conquerors, Swahili in sub-Saharan Africa because it was useful for trade.
Lately the ambiguous evidence of archeology and linguistics has been supplemented by DNA analysis, which offers insights into the direct ancestry of living humans. Geneticists can establish, for instance, that everyone alive today is descended from a woman who probably lived in Africa about 200,000 years ago. (Those facts don’t, incidentally, prove that the human race originated at that time and place. Logically, we all must have a common ancestress. She might lived before homo sapiens existed as a distinguishable species or long after. There are, however, other reasons, notably the lack of diversity in the human genome when compared to other species, that lead to the conclusion that we are a very recent arrival in the biosphere.) Similarly, seven maternal and five paternal ancestors have been identified for the vast majority of Europeans. They are dated and placed variously, from 45,000 years ago in Greece to 8,000 B.C. in Syria, using methods that rely on an heroic assumptions, e. g., that the rate of mutation of mitochondrial DNA was constant over the pertinent time periods. Still, despite all uncertainties, it is suggestive that one ancestress apparently dwelled in an early center of agriculture and that her descendants seem to have arrived in the various regions of Europe pari passu with neolithic farming.
Bryan Sykes, an Oxford professor and the founder of Oxford Ancestors, which ingeniously combines fund raising and research by selling individuals the results obtained by examining samples of their DNA, is one of the pioneers in this field. He has also written three books to explain it to the layman, the most recent of which is titled Saxons, Vikings, and Celts in America or, much more colorfully, Blood of the Isles in Britain.
Unhappily for such a promising topic, either Professor Sykes or his publisher has evidently decided that people who buy books about the scientific exploration of human ancestry know no history and want to know no science. Or it could be that the author has taken the human genome as a model: Most of the material in our chromosomes is “junk DNA”, serving no purpose but padding. Saxons, Vikings, and Celts is padded like an insecure debutante: sales pitches for Oxford Ancestors, descriptions of the scenery of the Scottish isles, praise for the fine organization of British blood drives, reminiscences of professional colleagues, accounts of local folklore, even a recommendation for a particularly fine ice cream parlor in Lampeter, Wales.
The on-topic padding consists of potted history, mostly very elementary with little focus on population movements. In places, it is absurd. Do you think there is a direct intellectual line from Polydore Vergil’s denial of the historicity of King Arthur to the Nazi death camps? Professor Sykes does. He is also under the impression that the Arthurian romances were ecclesiastical propaganda that became outmoded after the Reformation, leading to Arthur’s eclipse as a British hero in favor of King Alfred. As a quick check on that thesis, compare the number of poems, novels, plays, paintings and motion pictures featuring each of those figures over the past few centuries. For everyone who can recount the legend of Alfred’s cakes circumstantially, a hundred can tell you about the Table Round, Merlin, Lancelot, Guinevere, Gaiwan, Mordred, the Sword in the Stone, and other tales of Camelot.
The second rate fustian squeezes out what is interesting in Saxons, Vikings, and Celts, namely, the evidence concerning the ancestry of the English, Scottish, Welsh and Irish people. That is covered in a few bland pages, so devoid of details that it’s hard to figure out what the author has concluded or why. The scantiness of the presentation also makes it hard to judge whether he has taken all of the known historical facts into account. For instance, has he made allowances for the huge Irish immigration into England in the 19th Century? If not, his reconstruction is tainted by a very recent Celtic incursion and isn’t of much use in answering the vexed question of whether the Anglo-Saxons literally drove the Celts out of England or were, like their Roman predecessors, a relatively small ruling clique.
Historical genetics looks like a highly promising tool, but how are we to know if its practitioners are more interested in rating ice cream parlors than revealing the secrets of their art?