I agree with WINative regarding John F. Boatman's genealogy/ancestry. He was of Swedish, Belgian, and French Canadian ancestry. I followed his French Canadian line back to around 1820 without finding a single Native American ancestor (Metis, Ojibwe, Menominee, or any other tribe).
Below is a summary of John F. Boatman's genealogy.
John Francis Boatman
B: 9 Apr 1935 - Marinette, Marinette, Wisconsin, USA
D: 17 Jun 2010 - Saukville, Ozaukee, Wisconsin, USA
PARENTS OF JOHN FRANCIS BOATMAN
Lester Floyd Boatman (Swedish & French Canadian Ancestry)
B: 12 Apr 1902 - Marinette County, Wisconsin, USA
D: 30 Jan 1981 - Marinette County, Wisconsin, USA
Eleanor Mary (nee Hurkman) Boatman (Belgian Ancestry)
B: 28 Dec 1906 - Brown County, Wisconsin, USA
D: 9 Feb 1995 - Waukesha County, Wisconsin, USA
PATERNAL GRANDPARENTS OF JOHN FRANCIS BOATMAN, PARENTS OF LESTER FLOYD BOATMAN
Edward Boatman
B: 3 Aug 1873 - Sweden
D: 18 May 1902 - Marinette County, Wisconsin, USA
Eleanor Marie (nee Villeneuve) Boatman (French Canadian Ancestry)
B: 9 Jan 1876 - Ontario, Canada
D: 14 Nov 1963 - Marinette County, Wisconsin, USA
MATERNAL GRANDPARENTS OF JOHN FRANCIS BOATMAN, PARENTS OF ELEANOR MARY (NEE HURKMAN) BOATMAN
Henry Hurkman (Parents born in Belgium)
B: 12 Nov 1875 - Brown County, Wisconsin, USA
D: 5 Dec 1962 - Winnebago County, Wisconsin, USA
Mary Ann (nee Verdette) Hurkman (Parents born in Belgium)
B: 14 Mar 1883 - Brown County, Wisconsin, USA
D: 17 Feb 1955 - Marinette County, Wisconsin, USA