About Elizabeth Morgan Whitney
no confirmation that thomas is her son, here are some well studied theories, though.... some would say even confirmation, but it´s not.

http://www.leavesonatree.org/getperson.php?personID=I18849&tree=Tree1

Alleged Royal Ancestry of John Whitney Whitney Family Groups > John Whitney Family > Alleged Royal Ancestry of John Whitney Descents of John1 Whitney from the kings of England. There are also descents from David I, King of Scotland, Louis VI, King of France, Alfonso IX, King of Leon, various kings of Ireland and princes of Wales, and multiple descents from Charlemagne. This information is from the following web site: The Phillips, Weber, Kirk, & Staggs families of the Pacific Northwest

Line 1. 17. Henry I, King of England , by an unknown mistress 16. Robert de Caen, 1st Earl of Gloucester , m. Maud FitzHamon 15. Christian of Gloucester, m. William FitzAlan 14. Christian FitzAlan, m. Hugh Pantulf 13. Ivo Pantulf, m. ----- ----- 12. William Pantulf, m. Alice de Verdun 11. Rose Pantulf, m. Sir William Trussell 10. William Trussell, m. Maud Mainwaring 9. Sir Warin Trussell, m. Maud de St. Philibert 8. Lawrence Trussell, m. Maud Charnells 7. William Trussell, m. Margery Ludlow 6. Jennet Trussell, m. Sir Eustace de Whitney 5. Sir Robert Whitney, m. Elizabeth Vaughn 4. Robert Whitney, m. ----- ----- 3. Robert Whitney, m. Elizabeth verch Morgan ap William Connection here is doubtful. 2. Thomas Whitney, m. Mary Bray 1. John1 Whitney, m. Elinor -----

Line 2. 17. Robert de Caen, 1st Earl of Gloucester , m. Maud FitzHamon 16. Maud FitzRobert, m. Ranulph de Gernon, 2nd Earl of Chester 15. Hugh de Kevelioc, 3rd Earl of Chester, m. Bertrade de Montfort 14. Amicia de Meschin, m. Ralph de Mainwaring 13. Roger de Mainwaring, m. ----- ----- 12. Roger de Mainwaring, m. ----- ----- 11. Warin de Mainwaring , m. Agnes de Arderne 10. Maud Mainwaring, m. William Trussell

Line 3. 15. Henry II, King of England, by mistress Ida de Toeni 14. William Longespee, 3rd Earl of Salisbury, m. Ela FitzPatrick, Countess of Salisbury 13. Ida Longespee, m. Sir William de Beauchamp 12. Beatrice de Beauchamp, m. Sir Thomas FitzOtes 11. Maud FitzThomas, m. Sir John de Botetourte 10. Ada de Botetourte, m. John de St. Philibert 9. Maud de St. Philibert, m. Sir Warin Trussell taken from http://wiki.whitneygen.org/wrg/index.php/Alleged_Royal_Ancestry_of_John_Whitney

I don´t believe there is any reason to change it, until confirmation, at least. As it is a good theory and Sir Robert Whitney Jr., so to say... as the father, being approx. 17years old... at the time of Thomas´ birth... and still well and alive, according to the Whitney Research Group ... It´s not a bad theory... although, they say he died, without issue. This is about the Sr. Sir Robert http://wiki.whitneygen.org/wrg/index.php/Family:Whitney,_Robert_

This leads to the backround and discussion and references about Thomas Whitney´s Parentage. From the main page...

http://wiki.whitneygen.org/wrg/index.php/Family:Whitney,_Thomas_

one can also, access... a plethora on various Whitney lines and informations known to date by the Whitney Research Group

http://wiki.whitneygen.org/wrg/index.php/Main_Page