One of the great possible origin stories for a particular style of Amish quilts is based on the strong design resemblance between Amish quilts from Lancaster County, Pennsylvania, like this Center Diamond, and Welsh quilts of a very similar style, as apparent with the following quilt.

Pattern: 
Center Diamond
Maker: 
Maker unknown
Circa
1920
1940
Probably made in
Lancaster County
Pennsylvania
United States
78.5
78
IQSCM, Jonathan Holstein Collection
2003.003.0072