I took a look at this family and from what I found I think your best bet is Cornelius Bragg and Phoebe Karraker. as you may already know Cornelius died sometime before 1900 as Phoebe has remarried to a Charles A. Anderson and is living in Union County, Illinois with 4 of her children by Cornelius with her. I found your Calvin in 1910 and 1920 living in Marshall County, Kentucky with wife Nora and 3 kids, Kennith, Edgar and Ruby. He's listed as Call C. in 1910 and Cal L. in 1920. It is possible that he was named Calvin Cornelius as first born son in which case he could be the Cornelius living with Phoebe in 1900 census. I know its not like a birth certificate or other document clearly defining a connection but since he was born 1881and there is no 1890 census to locate him in his parents household before his father's death it may be the best you can find.