John and Martha (Jack) Bryson came to the United States (the passage says "about 1827").

The evidence

• “His father's parents, Samuel and Jane (Martin) Cleland, were born and married in County Down, Ireland, and came to the United States about 1816. His mother's parents, John and Martha (Jack) Bryson, were also born and married in County Down, Ireland, and came to the United States about 1827.”

  1908-brown-rock-county/32-courts-and-legal-profession.md, Vol. 2, PDF p. 273 / book p. 773

  Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.

  Grade A: Found on a page of one of our sources