Lee, A few months ago the Discovery Channel aired a program on Volcanos. They said about 1815-20, a volcano, somewhere half way around the world, filled the atmosphere with an immense amount of smoke and ash. It had a major impact on weather around the world. The northeast part of the US had frost all through the summer, virtually wiping out all crops. The program mentioned this to be a cause of migration from the northeast into the Ohio Valley. This may be a reason for some of the movement into Tioga/ Bradford area. Living in TX, I can't see much difference in PA and NY weather, but maybe there is. Both cold. Hope this helps. Tom Sisolak Fort Worth, TX Leela826@aol.com wrote: > Along the same question as Cindy had: I was wondering if anyone knows why > there was such a large migration from NY to Bradford/Tioga counties the early > part of 1800s. Have run across several families that did that -- then some > returned to NY later. > > Would appreciate knowing this. Thanks. > > Lee J.