Hoping Someone Can Help

this is the information that I have:
James Duncan
Birth 8 Dec 1848 in Philadelphia, Philadelphia, Pennsylvania, United States
Death 15 Sept 1913 in Beaumont, Jefferson, Texas, United States

married on 04 Dec 1872 in Columbus, Colorado, Texas, United States to

Cynthia Alice Patterson
Birth 25 Jul 1856 in Columbus, Colorado, Texas, United States
Death 22 Jan 1935 in Houston, Harris, Texas, United States

On one of the census records it says that James's father is from Scotland but I can not find anything else about his father.