Margaret is in the 100 and 200 Backstroke events at the 2008 Beijing Olympics.
- CLUB: King Aquatic Club (KING-WA)
- DOB: Mar 30, 1983
- HEIGHT: 5' 11" (180.3 cm)
- HOMETOWN: Huntsville, Ala.
- RESIDENCE: Seattle, Wash.
- BIRTHPLACE: Huntsville, Ala.
- COACHED BY: Sean Hutchison / Dorsey Walker
- High School: Huntsville HS '01
- College: Auburn '05
- College Major: Psychology, minor in Criminology
- Future Professional Aspirations: Work with abused children; is currently pursuing a masters degree in sociology
- Parents: Hans and Elizabeth; father is an engineer, and mother is a salesperson; stepfather is Win Livingston, and he is a lawyer; stepmother is Billie
- Sibling(s): Older sister (Martha) ran track at both the University of Alabama and University of North Carolina
- Notable Relative(s): Grandfather (Helmut Hoelzer) invented the analog computer during World War II
- Sports Played Before Swimming: Soccer, gymnastics, track, softball
- Nickname(s): Marge; nicknamed Marge because “that’s what everyone came up with”
- Hobbies Outside the Pool: Reading, sleeping
- Ultimate Way to Relax: Sleep, lay around, take a bath
- Most Influential Person: Mother; “She’s my role model and friend.”
- Sponsor(s): Speedo
- Training Stats: Swims more than 10,000 meters/yards per day, five-six hours a day, six days a week
- Loves traveling in general
- int'l destination: Europe
- summer activity: sleeping, reading
- Movie: Robin Hood and Spartacus
- TV show: Nip/Tuck, Grey's Anatomy, America's Next Top Model