I wanted to bump this thread back up again because I've found numerous times in the months since I made this connection that many of the AJ connections I find as I work through colonial profiles run through this Higginson link. The reason I bring this up is not to toot my own horn (well, maybe a little), but instead to point out that Jean Spader's tree on WikiTree still has not been filled out. There is a ton more there, through the Ingersoll and Bowditch families for sure and probably some of the others as well.
I didn't have time then to build this tree completely and my research interests have taken me in a different direction since, but if we want to connect some folks to the tree, and if we want to reduce the steps for many, many others, a great way to do it would be to continue to work on this part of the Global Family Tree. I am going to try to carve out some time to do it myself, but I'd love some help!