|Appearances||[[Appearance::Grand Theft Auto: Vice City Stories]]|
|Full Name||Mary-Beth Williams|
|Date of Birth||[[Error: Invalid time.|1983 or 1984]][[DOB::1983 or 1984| ]]|
|Place of Birth||Vice City|
Viceport, Vice City |
Little Havana, Vice City
Louise Cassidy-Williams (mother)|
Marty Jay Williams (father)
Mary-Jo Cassidy (aunt)
Phil Cassidy (uncle)
|games = [[Grand Theft Auto: Vice City Stories]]
|name = Mary-Beth Williams
|gender = F
|dob = 1983 or []
|pob = [[Vice City in GTA III Era|Vice City]]
|home = [[Viceport]], Vice City
Mary-Beth Williams is the newborn baby of Louise Cassidy-Williams and Marty Jay Williams who makes a few brief appearances in Grand Theft Auto: Vice City Stories. It is thought that after both her parents die her aunt Mary-Jo takes care of her, as this is the wish of Louise as she dies.
- GTA Vice City Stories
- Mary-Beth Williams is the only minor to be featured in the Grand Theft Auto series.
- Mary-Beth Williams is seen briefly in a blue Hawaiian blanket, similar to that of Tommy Vercetti's street shirt in Grand Theft Auto: Vice City.