Godsprincesa01 wrote in part:
"i have managed to somehow track down the washburn line back to Tancred de Tancarville, b. abt. 890 in Scandinavia. don't ask how i did it, but somehow i did."
I dunno how you did it either, but there is a work by Mabel Thacher Rosemary Washburn, "Washburn Family Foundations in Normandy, England and American" (Greenfield, Indiana: Wm. Mitchell Printing Company, 1953) from which I extract:
Mabel Thatcher Rosemary Washburn weaves a fantastic tale starting with Tancred (born circa 890) as an alleged Washburn ancestor. Tancred, a Viking whose heathenism was cleansed when he became a Christian feudal lord in Normandy, France (pp. 9-10).
Tancred's land holdings became known as Tancarville which is the same as Washburn in America and Washbourne, chiefly in England (ibid, p. 9).
Approximately eight miles from Evesham, England lies the village of Washbourne (population seventy-seven in 1914). In the old days, people were known to take their name from the locality. This is where the name surely comes, although the Washbournes, some who have dropped the letter o or the letter e, now live scattered throughout the world (ibid, pp. 1-6.
At the time when registers first became compulsory, the name Washbourne first appears in 1539 in the records of the Evesham Parish of St. Peter's, Bengeworth, County Worcester, England. But the name existed long before that in the neighborhood, as early as 1280. No provable links can be made to the earlier Washbournes; the oldest member of our line being John Washbourne, husbandman, buried in the Evesham parish church in 1546 (ibid, pp. 7-8).
Three generations later when Marjorie Washbourne left Evesham in 1635 to join her husband John Washbourne in New England, the American branch of the Washburn family was established. The Washbourne name continued to be well represented in Bengeworth, but by 1914 there were very few bearers of the name (ibid, p. 34).