Sir William "Braveheart" Wallace, Kt. - William Wallace (Braveheart)

He is on my tree as well. A great grandfather. Do you habe e info

That may very well be true! If there are some 'cross-overs' (aka generation collapse), he might actually be a grandfather for both ... but not necessarily.

There are often, of course, many different "paths" to a particular ancestor's profile. Real families are not often nice, neat binary branching trees. More like tangled bushes.

You may want to use the HistorySearch tool to check for "problem" profiles in the paths; they can cause the relationship (path finding) algorithm to get confused.

https://historylinktools.herokuapp.com/history ... Geni Project here: https://www.geni.com/projects/HistoryLink/14021

Keep in mind Geni is a shared World Family Tree! If you haven't tried them before, check out the "Ancestor" and Descendent" lists which can be found (among other places) as items under the "Actions" button in full Profile View.

he's my 18th great grandfather

he would be my 20th great grandfather. i found that hard to believe, i wish a dna test would exist to prove it. i live in Montreal,canada

Sir William Wallace of Elderslie, Kt. is your fourth cousin 17 times removed. Is this for real? I know he existed, but thought he had no children. How then can I be decended from him?

'cousin' relationships are typically "connected" through a family sibling (or aunt or uncle, etc). Being listed as a 'cousin X removed' typically is NOT an indication of being a direct descendant. Look at the expanded details in the Relationship panel to see how the actual connection path might "meander" through siblings and perhaps across marriages.

If you are the descedant of a person you är normally the same to his/her spouse (if they only have one).