People : Rosella Duff to Tandra Duff
Rosemary Duff 2 people
Roy Duff 4 people
Russell Duff 5 people
Ruth Duff 5 people
Ryan Duff 11 people
Sally Duff 2 people
Sam Duff 2 people
Samantha Duff 4 people
Samuel Duff 9 people
Sandra Duff 20 people
Sara Duff 5 people
Sarah Duff 10 people
Scott Duff 22 people
Sean Duff 16 people
Sena Duff 2 people
Shannon Duff 5 people
Sharon Duff 7 people
Shaun Duff 3 people
Shawn Duff 5 people
Sheila Duff 4 people
Shelby Duff 3 people
Shelly Duff 2 people
Sheri Duff 4 people
Sherry Duff 2 people
Shirley Duff 9 people
Simone Duff 2 people
Siobhan Duff 6 people
Sonia Duff 2 people
Stacie Duff 2 people
Stanley Duff 2 people
Stephanie Duff 4 people
Stephen Duff 15 people
Steve Duff 7 people
Steven Duff 20 people
Stuart Duff 2 people
Sue Duff 4 people
Susan Duff 23 people
Susanne Duff 2 people
Suzanne Duff 9 people
Tamara Duff 2 people
Tammie Duff 3 people
Tammy Duff 6 people