They were sisters-in-law (Grace was a sister of Clarence W. Pomasl).http://search.ancestry.com/cgi-bin/sse.dll?db=WW1draft&h...
World War I Draft Registration Cards, 1917-1918 about Clarence William Pomasl
Name: Clarence William Pomasl
Birthplace: Wisconsin;United States of America
Birth Date: 10 Nov 1890
Race: Caucasian (White)
FHL Roll Number: 1674598
Source Citation: Registration Location: Dunn County, Wisconsin; Roll: 1674598; Draft Board: 0.
Ancestry.com. World War I Draft Registration Cards, 1917-1918 [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2005.
Original data: United States, Selective Service System. World War I Selective Service System Draft Registration Cards, 1917-1918. Washington, D.C.: National Archives and Records Administration. M1509, 4,582 rolls. Imaged from Family History Library microfilm.