Leslie Diening and Karen Meredith Blott both have children with Down syndrome and felt overwhelmed by the lack of support services. They were connected by an NICU doctor and formed a close friendship working to support families of children with Down syndrome. Both mothers had busy careers and multiple children to care for when their youngest were born with Down syndrome. Together they founded Circle 21 to advocate for better coordinated care and support services for children with Down syndrome and their families.