How much weight would you give to circumstantial evidence that could connect two people in a family line?
I am working on a tree in which a young woman of 15 in 1950 with the name Nola Benish (deceased) met a man named David Harris (? living ?) and had a child (deceased). The only suggestion that they married is that she registered a new social security surname 5 months prior to the child's birth, and she stated on her apparent second marriage that her first was annulled. They lived in a large city. While I can find enough documents for the woman's ancestry, the man's name is very common and his name only appears on one document when his son dies. Looking at the 1950 census and the street addresses, I was able to determine that a young man of 17 in 1950 named David Harris lived within a mile of Nola. I suspect he is the father, and he is deceased and his ancestral line can be tracked, but is that enough to conclude he is the father? For now I have created two wikitree IDs: Harris-60622 and Harris-60724 and I made a note that I thought they might be one person. Question: Is there enough to link them?