Thank you Korina and idefix for your replies.
First the easier one. Even though I have only one location as a Favorite, the dropdown still lists two identidal listings, both saying Wood Village and both having filled in hearts. This seems like some sort of software bug.
So I thought I would write in various other locations in the upper-left search box, making the two Wood Villages drop down to the point they would not be listed, but no! No matter how many searches I do, the two identically labeld Wood Villages stay in the second and third positions in the dropdown. And they swap positions depending on which one I last pressed. So no joy with this issue.
Second, the harder one, related to Korina's last post. I went to openstreetmap.org, but I had to zoom into my home because entering the address resulted in no hits (the search address has to be exactly as in the map, so while everyone around here writes "S.E." the map has it as "Southeast."
But if windy.com is getting their info from openstreetmap, then even something more is wrong. When I entered my street number and street name exactly as listed after zooming on the map, then added my town and state and zip code, "no results found." So I dropped the city and state, just leaving street number and name and zip, it did have the hit. But the city was listed as Springdale. This is TWO TOWNS over, going the other way! Like, it goes Wood Village>Gresham>Troutdale>Corbett>Springdale.
In sum, my favorite address is in Troutdale, Windy.com says it's in Wood Village, but openstreetmap says it's in Sprigdale. All Oregon.