This is what I have for Jean Jacques Routhieaux. (My gggg grandfather). Not all information is sourced, but can give you a place to start.

Jean Jacques Routhieaux
Birth: 28 Dec 1804 in Noduwez, Brabant, Belgium, 1350
Death: abt 1880, Red River, Kewaunee, Wisconsin
Do not know where he is buried.

His father was Godfroid A Routhieaux ?

Immigrated aboard the ship "Lochinvar" on 15 Sep 1855 and arrived 23 Oct 1855.

Declaration of Intent filed 12 Nov 1855, at the Brown County Court House, Green Bay, Brown County, Wisconsin

Married Marie Jos Benne (1809 – 1888), married abt 1828 In Belgium

Children of Jean Jacques Routhieaux and Marie Benne

1.) Emmanuel Routhieaux 1829 – 1888 (my ggg grandfather)

2.) Josephine Routhieaux 1832 – 1904

3.) Julie Routhieaux 1833 – ?

4.) Antoine Routhieaux 1836 – ?

5.) Marie T Routhieaux 1840 – 1910

6.) Amelie Routhieaux 1843 – ?

7.) Isador Routhieaux 1844 – 1927

8.) Ferdinand Routhieaux 1846 – 1924

9.) Henry J Routhieaux 1851 – 1919

10.) Hortense Routhieaux 1854 –?

Found a Land Purchase of 40 acres dated 01 Mar 1858, for Kewaunee County, Wisconsin. [General Land Office of the United States, a Certificate of the Resister of the Land Office at Menasha. The South East quarter of the South West quarter of Section twenty one in Township twenty five of Range twenty three in the District of Lands subject to sale at Menasha, Wisconsin containing 40 acres.]