Osborn Sprigg had no daughter named Ursula Sprigg.
Marriages and Births - Queen Anne's Parish (1700's), Prince George's County, Maryland Salt Lake FHC Film No. 0014304, Item 3
Osborn Sprigg married Elizabeth Child: Margaret Sprigg Born March 20, 1726
Osborn Sprigg married Rachel Belt on July 11, 1727 by Jacob Henderson dau. of Col. Joseph Belt Children: Lucy Sprigg Born January 9. 1728/1729 Ester Sprigg Born February 16,1730 Rachel Sprigg Born June 1, 1733 Priscilla Sprigg Born September 26, 1735
An earlier Priscilla Sprigg, daughter of Col. Thomas Sprigg and Margaret Mariarte married, Ralph Crabb.Ralph Crabb's Will is dated 8 Mar 1734 in Prince George's County, Maryland.
Ralph Crabb and Priscilla Sprigg had no son named Edward Crabb, according to the Marriages and Births - Queen Anne's Parish, Prince George's County, Maryland:
Ralph Crabb married Priscilla Sprigg on August 22, 1718 by Jno. White dau. of Col. Thos. Sprigg Children: Thomas Crabb Born April 21, 1717 Sarah Crabb Born October 20, 1719 Margaret Crabb Born August 13, 1721 Henry Wright Crabb Born January 16, 1722/1723 Ralph Crabb Born November 29, 1724 Ellinor Crabb Born September 20, 1726 Jeremiah Crabb Born October 1728 John Crabb Born June 15, 1731
There are Ursula's in other families in Prince George's County, Maryland, but none married a Crabb.