Edgar Thoreau Whitehead - Evidence of parentage?

Edgar Thoreau Whitehead

Here is a link to a tree for John and Agathe where it only lists 2 children not the 7 we have on Geni

http://genealogics.org/getperson.php?personID=I00328563&tree=LEO

https://gw.geneanet.org/cepatri?lang=en&n=whitehead&oc=0&am...

Only 2 childrren

https://www.georgandagathe.org/children-parents-grandparents.html lists all the children

On Geni we currently have-
John Whitehead (1854-1902) and
Gräfin Agathe Whitehead, Countess as the parents of
* 1888 John Whitehead
* 1889 Frank Whitehead married Margarete Whitehead
* 1890 Edgar Thoreau Whitehead
* 1891 Agathe Whitehead married Georg Johannes Ludwig Ritter von Trapp
* 1893 Robert Whitehead, Jr.
* 1895 Maria Agata Carolina Malfatti married Gioacchino Pietro Luigi Malfatti Baron di Montetretto
* 1899 Joan Whitehead

This site https://www.georgandagathe.org/children-parents-grandparents.html has
John Whitehead (1854-1902) and Countess Agathe Gobertina von Breunner as the parents of
* John Jr Gobertus Whitehead who married Suzanne Bechet de Balan
* Frank Gobert Whitehead who married Countess Margarete Braida
* Agatha Whitehead who married Captain Georg Von Trapp
* Robert Jr Whitehead who married Anne Morton
* Mary Whitehead who married Baron Gino Malfatti
* Joan Whitehead

So it looks like Edgar does not belong to this family

https://books.google.com.au/books?id=igFpDwAAQBAJ&pg=PT330&...

Hitler's British Traitors: The Secret History of Spies, Saboteurs and Fifth Columnists by Tim Tate

Edgar Thoreau WHITEHEAD and Sophia BRAY nee VOZNESENNSKY

Edgar adopted his mistress's name BRAY

"Edgar Thoreau Whitehead was a veteran of the Communist Party in the 1920s and, as secretary of its west London branch, had attracted the attentions of the Security Service – not least since he appears to have served a short prison sentence....."

There are a few pages about him in the book but I don't have access to a copy to see if there are any genealogical data.

Another book that contains information about him
https://books.google.com.au/books?id=2001DwAAQBAJ&pg=PT11&d...

Agent Jack: The True Story of MI5's Secret Nazi Hunter by Robert Hutton

Hi, I am the grandson of Edgar Thoreau Whitehead, Alan Whitehead. The information you hold of Edgar's lineage is correct.

He changed his name to Edgar Bray on forming a relationship with Sophie Bray.

Edgar had two sons - my father, Leo Tolstoy Whitehead & my uncle, John Ruskin Whitehead.

Regards,

Alan Whitehead