Steve is correct. There is no evidence that Sir Joseph's works in Manchester ever produced pattern welded barrels.

That gentleman is Dave Buehner, Beans, Ryman Gun Dog
http://gundogforum.com/forum/viewtopic.php?f=86&t=31578
https://shootingsportsman.com/community/hunting-dogs/ladies-and-the-upland-shooting-life/

He was here briefly with his creative historical fiction
http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=520616&page=3

He is inflicting himself on ShotgunWorld now
https://www.shotgunworld.com/bbs/viewtopic.php?f=107&t=482434