George Campbell was born possibly in Selkirk, Scotland on 12 Oct 1812, the son of John "Duke"Campbell and Margaret Lockie. His four older siblings were baptized in Yarrow, Selkirk/Selkirkshire, Scotland. His tombstone indicates his birth year to be 1811. It is possible that he did not know his actual birth year, or his family erected his tombstone later and they were incorrect, or the date on the old handwritten listing of the John "Duke" Campbell was incorrect.
He would have immigrated to Dumfries, Waterloo County, Ontario with his family in 1825. He was a resident on 4 Aug 1837 upon his marriage to his first wife, Hope Wood, of Dundas, Waterloo County, Ontario. Witnesses were Margaret Strang, Marg't Wood, and William Crozier [The relationship that definitely connects George to this Campbell family is that William Crozier was married to Margaret Campbell, a daughter of John "Duke" Campbell]; Margaret Wood most likely had some relationship to Hope. Hope Wood Campbell was shown as age 37 in the 1851 census. Hope Wood was the daughter of James Wood and Margaret Mellis, born in or near Banff, Scotland in 1813. Records of the first three of their children indicate they were all born in Dumfries. The obituary of their daughter, Mary Jane, born 26 Mar 1846, indicated she was born near Woodstock, Oxford County, Ontario. Hope Campbell and all the children were enumerated in the 1851 census of East Zora Township of Oxford County; curiously, George was listed as a laborer on a different, but nearby census page in the East Zora Township and is indicated to be a resident of West Zora, perhaps working and living away from the family for a particular time.
After 1851 Hope Campbell died and on 20 Jan 1854 George married a second time to Margaret Bruce in Oxford County. Margaret Campell's obituary (Audubon [Iowa] Advocate 14 Dec 1922) indicated she was born in County Annagm, Ireland on 1 Mar 1829 and came to Woodstock, Canada at the age of 9. The family emigrated to the United States; their daughter Lillian was born 12 Oct 1864 in Michigan. George's son, David, resided the remainder of his life in central Michigan.
In the 1860's the family, except for the oldest four children, who had stayed in Canada and Michigan, moved to Oxford Township, Johnson County, Iowa where George purchased land in 1869; they are listed in the 1870 census for that township. On 3 May 1873 they sold the farm and made their final move to Audubon County, Iowa where George purchased 100 acres of land on 25 Jun 1873 in Melville Township (part of Section 10, Twp. 80 North, Range 43 West). George died on 18 Dec 1877 at the age of 66 and is buried in Luccocks Grove Cemetery in Leroy Township, Audubon County, Iowa. He died intestate and several years passed before the estate seemed to have been finally settled in 1889. The heirs of the estate deeded their interest to the farmland ot their brother, George, between 1883 to 1889. These deeds enabled the finding of the oldest four brothers and sisters in Canada and Michigan.

Grateful acknowledgment to Wendy Chaloux for the original information connecting George Campbell as the son of John "Duke" Campbell and Margaret Lockie, and for her research linking Hope Wood to her parents, James Wood and Margaret Mellis.

Children of George Campbell and Hope Wood:
1. John Duke Campbell (1839-1920)--stayed in Canada
2. Anna Campbell (1840-1920)--stayed in Canada
3. David Campbell (1843-1924)--stayed in Michigan
4. Margaret Campbell (1843-1927)--stayed in Canada
5. Mary Jane Campbell (1846-1891)
6. Robert Campbell (1847/8-1925)
7. Alexander Campbell (1851-1885)

Children of George Campbell and Margaret Bruce:
8. Jane E. Campbell (1856-1906)
9. George Campbell (1857-1917)
10. William Campbell (c1860-after 1870)
11. Lillian Campbell (1864-1916)
12. Norman Campbell (c1871-ca. 1887)
13. Alfred Campbell (1872-1965)
14. Frederick Allen Campbell (1873-1934)

See also:
http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=ankenbauer&id=I0251