1)Charles Robbins of Randolph County, Illinois.
Born: 10/7/1830
Died: 1/29/1903 in IL
In one of the census' it indicates that Charles' father was from Maine and his mother was from Pennsylvania. Some Family History website records suggest Charles father was William Charles Robbins, and his mother was Eve (or Eva) Bowerman, but this has not been confirmed.

2) William James Robbins
Born:  1854 in IL
Died: 10/28/1881 in IL

3) Claude Raymond Robbins
Born: 7/15/1881 in Steeleville, Randolph, IL
Died: 7/5/1942 in CO

4) G. P. Robbins (Gernzie Perl- goes by "GP" or "Robbie")  was born in Colorado, in 1912.