Mary Jane Halsey and 1st husband a Mcqueen

I am searching for information on Gary Robert Miller and his parents Mary and Ernest Miller. Gary was born 13 July 1939 Sherman Hospital//Elgin, Kane Co. Illinois. His mother Mary Jane Halsey Miller was born 23 August 1917 in Iowa. Her first husband was a McQueen..do not know anything about him. Her second Husband was Ernest Robert Miller born 28 May 1914. They lived in Chrystal Lake, Illinois. Mary Jane died 3 days after Gary was born, Ernest died 25 October 1982. Don't know if he ever remarried or had any other children.
Can anyone help me find out any information on Gary and/or his parents? My husband is a nephew of Mary Jane.