An interesting biography/family history of William Fergus is included in "Progressive Men of the State of Montana". Parents: Andrew and Christian (Hamilton) Fergus, of Lanarkshire, Scotland.On 16 Jun 1862, William married Miss Helen Hamilton, daughter of William and Agnes (Pate) Hamilton.Mrs. Fergus died 11 Jan 1892. Fergus children: Andrew, Agnes P. (Mrs. N.L. Landru), Christine H. (Mrs. David Hilger), William H. (m. Amelia Weidman), Robert B. and James P. (twins); Alexander H. (deceased); Ellen H.; Margaret A.E. (Mrs. John B. Rauch).