An obituary might also have appeared in a newspaper near Highland, Wabasha, Minnesota, where John was born.
John's mother Margaretta died 1894; his father Michael died 1909, per Find a Grave.
John and his parents are buried at Saint Peter and Paul Cemetery, Conception, Wabasha County, Minnesota.
Find a Grave LINK:http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=42...
May I add the family in 1880 census?
Highland, Wabasha, Minnesota
Michael Liebel 40 born about 1840 in Byern
Margaretta Liebel 40 born about 1840 in Luxembourg
John Liebel 11
Barbara Liebel 9
Elizabeth Liebel 5
Mary Liebel 3
LIEBEL, BARBARA married WALLERICH, JOHN P 2/16/1892 Wabasha County MN
Eau Galle, Dunn, Wisconsin
Barbara Wallerich 68 widowed, born about 1872 Minnesota
Vera Wallerich 42
Vincent Wallerich 33
Barbara died 1942 and is buried at Saint Henry's cemetery in Eau Galle, per Find a Grave. Her son Vincent entered the US Army (this was World War II) in September 1942.