Nobody knows.

In "Return to Tomorrow" Spock speculated that Vulcans might be descended from Sargon's people more than 600,000 years ago. In any case there might be descendants of other colonies of Sargon's people on other planets, who would look a lot like Sargon's people - whose biological bodies were never seen  but believed by Sargon to resemble Earth Humans or Vulcans.

"Balance of terror" implies that Vulcan conquered and colonized other planets once, and Romulans seemed to be descendants of those warlike and unreformed ancient Vulcans. It is logical to assume that society on Vulcan and Romulus reverted to barbarism as civilization collapsed during the fall of the Vulcan Empire and it took countless thousands of years for Vulcan and Romulus to rebuild civilization and become space traveling societies again.

STTNG "Gambit" mentions ruins of Romulan off-shoot cultures on various planets one being two thousand years old. Thus we may deduce that probably the Romulans regain spaceflight abilities several thousand years ago and later lost them and regained them again just a few centuries ago.

Of course many fans believe in a far different chronology based on Diane Duane's novels, with Vulcan and Romulus both keeping interstellar travel abilities for over two thousand years until the time of STTNG. But that contradicts the chronological implications of the various episodes.

In "The Paradise Syndrome"  Spock mentions that some Vulcan offshoot cultures use musical notation alphabets. That implies that there were at least two known ones which did so and at least one known one which did not.

The people of Rigel V might be descended from Vulcans and/or Sargon's people, since in "Journey to Babel" it was said that their physiology was similar to, but not identical with, Vulcan physiology.

And that is about all the information available to decide whether the Mintakans are descended from Vulcans and/or Sargon's b people or evolved independently to be similar to Vulcans.

Except of course that it hardly needs saying that a planet orbiting a star such as Mintaka would not have time to evolve intelligent life and the Mintakans and/or their planet must have been imported from elsewhere, perhaps by the Preservers.

Are Mintakans related to Vulcans?
I often get requests to have the link of the home logo on a subsite link to the home page of the root site collection? 

I can't see any native way of doing this with the SharePoint navigation but might be missing something? 
