I agree that your grandfather, Calvin Phillip Blurton, was born in IL.His WWI Draft Registration Card lists his birth date as Mar 1888 in Kinmundy, IL.He registered in Ada, Norman Co MN on June 5 1917.He had a wife and 4 children at that time.
CA Death Index 1940-1997 Calvin Blurton b 18 Mar 1886 IL d 24 Jun 1968 San Joaquin Co CA; mother's maiden name-Gardner
I have seen Calvin's wife, Lena's surname listed as Lassiter/Lasater & Lassater.
I have Calvin & Lena on the 1910 Marion Co IL census; on the 1920 Clay Co MN census; on the 1930 Los Angeles Co CA census.
I have Calvin's line as this: Phillip Blurton-Serieth H. Gardner Phillip Bluton-Mary Jones Hinton Blurton-Susannah Howell
Susannah Howell was the sister of my great great grandfather, Henry H Howell.The Howells came from Orange Co NC, to Wilson Co TN, then to Marion Co IL.I have quite a lot on the Howells and the Blurtons.I work with a Howell cousin who grew up in Kinmundy IL.Hinton, Susannah and most of their children moved to SW MO by 1860.I don't think that Phillip & Mary Jones Blurton moved there.I would be happy to share any info I have with you.