Who is Purr from The Midwife's Apprentice and what is their importance? The_Midwife's_Apprentice English & Literature Purr | The Midwife's Apprentice

Alyce's cat, a stray that she rescued after the boys of the village tossed it in a sack with an eel and threw it in the river. The cat chooses his own name, as Alyce did, and she calls him Purr.