From Lulita Pritchett letter:
"There is a tradition in the family that we are descended from Pocahontas,
 the Indian maid, though it has never been proved.  It was thought to be
 through the Elgin line.  Pocahontas and John Rolfe did have many descendants."

[Note- all dates are approximate]
Pochahontas (1595-1617) married John Rolfe (1585-1622)
  They had Thomas Rolfe (1615- ) who married Jane Poythress
      They had Jane Rolfe ( - 1675) who married Colonel Robert Boling
         They had John Boling (1676-1729) who married Mary Kennon (1679-1727)

Mary Kennon was the daughter of Richard Kennon (1650-1696) and
     Elizabeth Worsham (1655-1705)
Elizabeth Worsham was the daughter of John William Worsham (1625-1660) and
      Elizabeth Littleberry (1623-1678)
Elizabeth Worsham was the older sister of John Worsham

John Worsham (1659-1729) married Phoebe -- (1657-1729)
   They had Captain John Worsham (1679-1753) who married Mary Wynne (1689-1725)
      They had Joshua Worsham (1720-1771) who married Mary – (1725 - )
         They had Robert Worsham (1748-1897) who married Ruth Wynne (1755-1808)
            They had Robert Worsham, Jr (1778-1811) who married Jane Reagan
               They had Robert Nicholas Worsham (1813-1896) who married
                    Emerine Jane S. Elgin, and traveled the Oregon Trail
                    in 1852 to Clackamas County, OR. 

Emerine Jane S. Elgin was the daughter of Frederick Elgin (1772-1827) and
     Catherine Perry (1789-1825)
Emerine J.S.Elgin was the younger sister of Mary Elgin

Mary Elgin (1793-1825) was the second wife of James McCormick (1790-1861)
   They had Mary Ann McCormick (1819-1899) who married
        John Ransdell Bourn (1803-1875)
      They had Margaret Emerine Bourn (1849-1939) who married
           James Harvey Crawford (1845-1930)

James McCormick and son Elgin McCormick accompanied sister-in-law / aunt
     Emerine J.S. Elgin Worsham and family to Oregon.

Robert Nicholas Worsham came to Oregon from KY in the 1852 wagon train,
     arriving in October 1852 and settling a land claim on 1 November 1852.
     Affiants on land claim were William Holmes, Isaac G. McCormick,
     Timothy Gard, Loren D. Kirk.

From Lulita Pritchett letter reporting Margaret Emerine Bourn comments:
[James McCormick] Went to Oregon in the spring of 1851 [note-1852] with son
 Elgin McCormick, aunt Emerine Washam [note-Worsham] and uncle Washam
 [note-Robert Nicholas Worsham],  (Washam children were Emily, Virginia,
 a boy and one other). [note-Juliet Elizabeth Worsham, Robert W. Worsham,
 Virginia F. Worsham, Emerine J. Worsham, Lewis L. Worsham, and Thomas P.
 Worsham, who was born in KY in 1851.  Other siblings born in OR.]

Later, when gold fever broke out, James McCormick and Elgin McCormick went
 from OR to CA.  Elgin went across the plains 3 different times and came
 back by water around the Horn twice. Brought us the first oranges and
 shells we had ever seen.  Grandfather brought home a little vial of gold
 and had gold ring made for each of his daughters. [Note-unknown
 siblings of Elgin and Mary Ann McCormick]