I just received these names so appologies for lack of more dates. My grandfather James Oswald Donaldson Cook, b.11/11/1905 d.3/21/1966. Married to Violet Oldendorf. Ggf was Sylvester McSherry Cook. B ? d.9/30/1950, wife was Jane (Jennie?) Kriswell b.? d. 1952-53. Other childen of Sylvester; John, Ray, Charles, And possibly Laura Jamison of Oregon. Also have a couple names not properly tied in as yet. Wilda Mary Cook Adametz, d.10/12/1986, she was sister of John and Richard Cook. ( St. Mary's Cemetary, Pittsburgh) Sylvester resided in Pittsburgh, Pa.