Rosy Lillie Cobb was the daughter of Robert L. Cobb, b 1849 MO, and Winnie A. Bradley, b 1857 Union Co KY, who married in Shawneetown IL in 1875. This family, including Rosy Lillie, is enumerated in the 1880 Webster Co KY census, p 130, Dixon District; household #6/6.

Winnie A. Bradley was the daughter of Josiah Bradley, b 1828 VA and Sarah Elizabeth Herrin, b 1835, who married 25 Dec 1851 in Union Co KY.