Étienne Clement Roserens (last name also spelled Rosera, Roserus) was the son of Anne-Marguerite Roserens (1796-?) of Orsières, Switzerland. He married Rosalie Tessier (she was born 6 Oct 1843 in Ste. Martine, Châteauguay, QC, Canada, died in Gibson Township, Manitowoc Co., WI).

Children (with first wife, Rosalie Tessier):
Henry Rosera (1860-1897)
Children (with second wife, Vitaline Tessier):
Elias Rosera (1863-1946)
Ida Rosera (1863-?)
Alfred Frank Rosera (1865-1959)
Mary Virginia Rosera Pelkey (1866-1963)
Joseph Manuel Rosera (1867-1958)
Julia Mary Rosera Pelkey (1870-1938)
Stephen Frederick Rosera (1872-1964)
Anne Rosera Hendricks (1874-1951)
John Rosera (1875-1966)
Clara Filorine Rosera Tyrrell (1878-1954)
Virginia Rosera (1879-1902)
Manuel Rosera (1880-1931)
Louis T. Rosera (1884-1884)
Peter Paul Rosera (1885/6-1885/6)
Louis P. Rosera (1888-1962)

His obituary (newspaper unknown) reads:

"FIRST SETTLER OF LENA DEAD. Clement Rosera Moved to Present Site Village 39 Years Ago. Came from Swiss Home to Wisconsin in 1856

"Clement Rosera, whose death we briefly mentioned last week, was the first settler on the site of the present village of Lena more than 39 years ago.
"He was born in Switzerland October 17, 1831 and enlisted in the Swiss army when 17 years old. As was then the custom he was sent by his government for pay to fight for Italy in its war against Austria where he served for eight years and in his later life related many interesting reminiscences of his experiences at this period in Naples and Sicily and of the fearful ravages of cholera when it swept over the land.
"In 1856 he came to Wisconsin and settled in Mishicott, Manitowoc county and the next year January 16 he married Miss Vitaline Tiessier who after almost 55 years of wedded life survives him. Besides her eleven of the fourteen children born of this union also survive him together with fifty-seven grandchildren and three great grandchildren. His surviving children are four daughters, Mrs. A. E. Pelkey, Lena; Mrs. Alvin Tyrell, Bear Creek; Mrs. H. Hendricks, Wausaukee and Mrs. Sol. G. Pelkey, Oconto. The seven sons are Eli, Fred, Stephen, John, Manuel and Louis, all living near their parents and Joseph of Bear Creek.
"At the beginning of the war [the] deceased enlisted at Manitowoc in Co. D. 27th Wis. Vol. Inf. and fought at Vicksburg and Mobile Bay and in Arkansas where he was wounded by guerillas. He was sent to the hospital at St. Louis where he remained for eight months when he was discharged and sent home. He reenlisted September 24, 1864 and was sent to Texas where he served until he was honorably discharged July 14, 1865."