Yes there are many references to Tillmans and Tilghmans in the book.I am sure there are other examples of lines changing the spelling of their names, this is one such that I just supplied to another poster recently:
Pg. 98 THE TILGHMAN/TILLMAN FAMILY REGISTER:
"614. ROGER TILGHMAN, son of Christopher (613) and Ruth (Devonshire) Tilghman, was b. 1650 in Accomac Coutny, Virginia. He left a family Bible or journal, which passed to his son Robert. Roger located on 1060 acres of land in Bristol Parish, Charles City County, Virginia, Apr. 20, 1689 (Records of the Landoffice, Richmond, Virginia). This patent was for the transportation of 22 persons into the Colony. This was in the form of headrights. The place selected was known as Fort Tillman, and was situated on the South side of the Appomattox River, at Moneus-a-Nock (Monk's Neck), thence to Gravelly Run. This is now in Dinwiddie County. After settling in Virginia Roger changed the spelling of his name from Tilghman to Tillman or at least it appears on some of the existing records. His children did not all immediately change the spelling of the name, as will be found from tombstones found in North Carolina. Roger m. firstly 1674 Winnefred Austin. Issue: Robert, b. 1675. Roger m. secondly 1680 Mrs. Susanna Parram or Parham, b. 1648 and d. Mar. 2. 1717, in Prince George County, Virginia. Issue by second marriage: John, b. 1682, George, b. Jan. 10, 1683, Jane, who m. Nicholas Robinson: and Christine, who m. Robert Abernathy."