Sonia Marmeladov's full name is Sofya Semyonovna Marmeladov. In the novel "Crime and Punishment" she is mostly called Sonia.
Who is Sonia Marmeladov?
Sonia Marmeladov is a young girl of 18 years old who has to work as a prostitute to provide for her family - her drankard father, her stepmother and three children of her stepmother - Katerina Ivánovna.