A very good Wisconsin genealogist John Von Haden has the following site
http://www.washcowis.com/ He spoke at a national genealogy convention held in Milwaukee a few years ago and suggested that when you research your family also research their neighbors because many will have come from the same area in Europe. He obviously followed his own advice.
"This website lists genealogical research available from John Von Haden, a native of Hartford, Wisconsin. 'My research covers all of Washington and Ozaukee counties, Wisconsin and portions of Milwaukee, Waukesha, Dodge, Sheboygan, Fond du Lac counties with some focus on Calumet, Chippewa, Clark, Marathon, Outagamie and Wood counties.' He further says 'my specialty is researching church records and civil records in Germany, France and Luxemburg' ".
You can buy the following Plier information from him.
Plier - Family Group Sheets (for Plier)
Plier, Henry - born 1869, married Elizabeth S., 6 children from 1903 to 1912
Plier, Nicolaus - born 1836, married twice - Margaret M., Elisabeth S., 7 children from 1861 to 1869
Plier, Peter - born 1869, married Mary S., 5 children from 1892 to 1907
Plier, Peter - born 1846, married Margaret S., 7 children from 1863 to 1878
[(I am guessing that the wife is Margaret Schoeder although I only have the names of 6 children based on the census. But I believe JVH would also check church records and a child could have been baptized but died mq-t.) (The Luxemburgers in northern Ozaukee Co. and around Random Lake in Sheboygan Co. have kept very through records which are available for research, mq-t.)]
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Plier - Newspaper Stories (for Plier)
Plier, Alfred P. and Dorothy M. Lesch - Married, 1940's
Plier, Anna Katherine and Lester E. Schmidt - Married, 1930's
Plier, Emil and Edna R. Large - Married, 1930's
Plier, Frank-Mrs. - Obituary, 1920's
Plier, Frank and Clara Metz - Married, 1920's
Plier, Harvey - Obituary, 1940's
Plier, Harvey-killed in stone crusher - Obituary, 1940's
Plier, Harvey H. - Obituary, 1940's
Plier, Henry, husband of Elizabeth - Obituary, 1940's
Plier, Mary Catherine-Mrs. Nicholas - Obituary, 1950's
Plier, Nicholas P. and Kathryn Feider - Married, 1910's
Plier, Peter - 45th Anniversary, 1930's
Plier, Peter and Mary Schmit - Golden Wedding, 1940's
Plier, Peter, husband of Mary - Obituary, 1940's
Plier, Sylvester and Marcella Parlow - Married, 1930's
Plier, Sylvester, husband of Marcella - Obituary, 1940's
Plier, William C., husband of Emma - Obituary, 1930's
Plier, Wm. and Isabelle Ernster - Married, 1920's