Fedor Alexander Bunge - Dna shows FEDOR ALEXANDER BUNGE is highly probable be the great grandfather of Jonathan Shaw, his great grandmother was Emma Eliza Peake.

You say "DNA shows" but the closest you come to providing details is that
You say: "There are numerous DNA links to both the Bunge and Julie Emilie’s family, which means one os his sons must be Constanzas father! "
Exactly what do you mean by "There are numerous DNA links to both the Bungee and Julie Emilie’s family"?
Numerous DNA links from you yourself to descendants of each family? Or??

In some endogamous populations, basically any given person shares DNA with at least half of the whole population.
Is this a family that is part of an endogamous population?

For each pair - How many cMs of shared DNA are you talking about, over how many segments, how many shared segments over 10 cM? Etc. And on which website for each? Are we talking tiny 2-3 cM segments, or triangulated segments over 20-30 cM or ?

[Not a family I know anything about, but am seriously interested in seeing DNA analysis used properly. ]

We are really looking for family members who might have knowledge of this! Jon knew his great grandmother, he knew his great grandfathers name was Bunge, but not his first name. He knew his grandmother was born in Valencia, Spain and Jon’s great grandmother took him to Valencia, when he was a young child, she showed him where she used to live, she took him to his grandfather’s grave, He knew he died young. 1911 Census shows his great grandmother, a widow, living in London, England, with her daughter, both have the surname Bunge. DNA links show several 3rd, 4th and 5th cousin common ancestor links to both the BUNGE family and Julie Emiles family, which would suggest these were his great grandparent. We are not DNA experts, just trying to fit the pieces together and hopefully find out a little more about Fedor, to confirm if he definitely was his great grandfather and maybe see a photo of him and find put why he died so young?

If, when you create a Discussion, for "Who can see this discussion?" You click "Only my Family Group" then I believe they get notified, but the rest of us cannot see it.
If you choose "Public" then all of us can see it - but family is not notified.. Tho since you created it from Fedor's profile, everybody following Fedor should have been notified.