Why might Spiegelman have titled chapter 1 “Mauschwitz”?

Spiegelman dwells on his own life for the majority of this chapter, and maybe that is why he named it Mauschwitz; because he knew he would be concentrating on his own life and relationships more than his father's story, and calling the chapter Auschwitz would not be appropriate, even though we are given a first glimpse

explanation:

the silver bells of the sleds are merry and keep time in the winter nights while the sky twinkles happily. the golden bells of weddings are delightful in their peaceful happiness, foretelling a rapturous future. meanwhile, the brazen alarm bells scream frightfully in the night, with a discordant and desperate sound. in their clamor, these bells convey terror, horror, and anger. finally, the iron bells are solemn and melancholy, while those in the church steeple are like ghouls who feel happiness. the king of the ghouls, who rings the bells, cheerfully keeps time with the moaning and groaning bells.