Oscar married Cordelia Elkins on 7 Jan 1893 in Jackson Co., Indiana, USA. Cordelia (daughter of John William Elkins and Elizabeth Harris) was born in 1876 in Brown County, Indiana; died in Bloomington, Monroe County, Indiana. [Group Sheet] [Family Chart]

1. John Hillenburg was born in Brown County, Indiana; died in Bloomington, Monroe County, Indiana.
2. Delbert R. Hillenburg was born in Brown County, Indiana; died in Bloomington, Monroe County, Indiana.
3. Myrtle Hillenburg was born in Brown County, Indiana; died in Bloomington, Monroe County, Indiana.
4. Lillie Hillenburg was born in Brown County, Indiana; died in Bloomington, Monroe County, Indiana.
5. Della Hillenburg was born in Brown County, Indiana; died in Bloomington, Monroe County, Indiana.
6. Dresden R. Hillenburg was born on 4 Apr 1896 in Brown County, Indiana; died in Jun 1964 in Bloomington, Monroe County, Indiana.
7. Everett Hillenburg was born on 31 Jan 1903 in Brown County, Indiana; died on 6 Aug 1963 in Monroe County, Indiana.
8. Elbert Hillenburg was born on 9 Jul 1906 in Brown County, Indiana; died on 10 Jan 1974 in Monroe County, Indiana.
9. Gilbert Frank Hillenburg was born on 6 Dec 1909 in Brown County, Indiana; died on 29 Apr 1973 in Bloomington, Monroe County, Indiana.