My grandmother's family were homesteaders over in Mapelton, Oregon. They had a donation land claim off Hadsall Creek. My great grandfather was Mark Jefferson Hadsall.
We had a couple of Hadsall reunions over on the coast about 10 years back.
They had Hadsall reunions regularly back in the 1950's in Eugene at Skinners Butte Park.
Respond to my e-mail and I will send an invite to my Ancestry firstname.lastname@example.org