- Samantha Parkington
- Gardner Edwards
- Cornelia Edwards
- Mary Edwards
- Elsa (mentioned only)
- Nellie O'Malley (mentioned only)
The book is fictionalized at the start as a scrapbook that Samantha was given from Cornelia to document her memories of the wedding, a gift for being her "most exceptional bridesmaid." Samantha on the first page states that since the engagement, she has kept magazine clippings and pictures of idea to use for the wedding. She also states that everything can't be planned and the wedding almost didn't happen, before starting to discuss the events.
The book quickly documents events prior to the wedding, with illustrations from Meet Samantha, Samantha's Surprise, and Samantha Saves the Wedding. There are also facts and and images of artifacts from weddings of the era, and crafts to make and do.