Bridget McGinn was a girl who was kidnapped and taken to Bolvangar. Here, she became friends with Tony Makarios. The day after Lyra Belacqua, arrived at Bolvangar, Bridget was informing all the other children about the operation Tony had, when a nurse arrived in the canteen and asked Bridget to come with her.
After she had gone through intercision, her dæmon was put in a cage with a nametag stating she was 12 years old and it bore the number 33017. Lyra Roger Parslow saw her dæmon inside this cage after they escaped from the registration after the fire alarm went off.