This is Isabella, or rather, it is a portrait of Isabella carved in limestone. She was the daughter of John III of Sweden and of Catherine Jagellon of Poland, which makes her Isabella of Finland. Quite intuitive, wouldn't you say? However, she was received when her parents were imprisoned in Gripsholm Castle, so she died only two years old (born in 1564, died in 1566). The grave is located in the Strängnäs Cathedral.