In a book called " GENEALOGY OF THE FRENCH FAMILIES OF THE DETROIT RIVER REGION REVISION 1701-1936 published by the Detroit Society for Genealogical research as part of the 50th anniversary celebration vol. #1 page 214.
John Baptist Campau b. 9/5/1807 m. 10/12/1830 Elisabeth Thibault at St. Antoine River Rasin she was born In Detroit the daughter of Gaberial Thibault and Jane Cardinal.
The children of Of John and Elisabethare listed as,
1 Julian b. 29 jul 1831 St Antoine
2 VICTORIA B. 27 JUL 1833 ST Antoine
3 Zoe b. 8 may 1836 st Antoine
4 sophia b 29 mar 1838 At Antoine
5 Adelaide b. 7 Apr 1840 Monroe
6 Sarah b. 3 Jun 1842 Monoe
7 Elisabeth b. 29 Jun 1844 Monroe
8 Charles b. 13 Feb 1847 Monroe
9 Adelaide b. 3 Dec 1849 bp 24 Mar 1850 Monroe
10 John Baptist b. 30 Sep 1851 bp 6 May 1852 Monroe

Pages 127 to 222 have Compeau's in it. you might want to get a copy of this book and check it out. I do not have it but the Genealogy society or library should have a copy.
It states :
Steven--he had
James-- he had
John Baptist--he had
Julian-- he had
John Baptist 1807 father of Victoria.
hope this helps
Pam