Who is Clem Cottle from The Cat Who Went Underground and what is their importance?

Clem Cottle was the first carpenter Qwill hired to build his addition. Clem had plans to marry Maryellen Wimsey in October, and he is described as having been an honest, skilled and industrious man. Quill worried when Clem disappeared the day before the Fourth of July parade. He later learned that Clem was Joanna's fourth victim.