I'm not sure we can rely on what we know from family search yet as there is massive contradiction there among the sources. And we may not be able to ever find a reliable source of certainty, but we can certainly try. I have found a few reliable written sources that have Absolum and his father Ralph detailed there so if we can find reliable sources to link your family to them that will open up a lot of research already there.
Let's start with younger generations and work our way back as those will be more certain because there will be stories in your family and people who knew or knew of these relatives.
We'll get there if there are records, but I think we have to toss out anything we see by others on the internet as most of that resource is wrong as they have confused who James Stewart, Absolum Stewart, and Ralph Stewart are....in some we see different dates and in others we see wrong relationships where someone lists a spouse that really was a child. I found the exact same problem when I was researching my Stewart family...coincidentally from Virginia as well though I'm not sure they were closely related to your Stewart family.
On the Stewart side of your family, who are the oldest relatives you have reliable information on based on family records, stories, etc.? What are their dates of birth, death, locations, marriages, etc....anything you know personally 100% or close to 100%. Hopefully that will lead us to a census which is reliable, or information in one of these other family books that while not as reliable is fairly reliable as long as they cite sources of how they know these relationships.