They're all among "The Dead"...
Those whose blood-lines lead down to you are "one's Ancestors".
Among your ancestors are those considered "one's Honorable Ancestors". As well but separately there are those who would be deemed your "Dishonorable Ancestors".
Whom is it then that decides the "honorable" or not? Is it a distinction only made or makeable by your own soul's inherent ethical code? That's a tough one and serious food for thought.
It remains my earnest contention that one commits a direct offence to "Your Ancestors" in using the term "ancestor" in the myriad of EUPHEMISTIC forms so commonly found in use by my dear friends in ADF and elsewhere. I feel that it is important for us to reexamine our usage of terms like "Ancestors of Heart" and "Ancestors of Spirit".
You can't choose your relatives, and you can't choose "Your Ancestors".
You can chose among The Dead though. And among those is the host of the Honorable and Honored Dead, and therein are those, not of our blood, but whom we all revere and hope to emulate due to the superlative nature of their works and words.
Words like these are important...
The solution here for us in ADF is to do the boolean thing and make it all so much simpler by saying "The DEAD" when that's what we mean - which, IMO, means for us to start doing it about ten times more than we've been doing up until now. And yes, once you go back far enough in the generations, we do all share the same, albeit remote, ancestry.