Answer:
The best answer could be: "Mr. Gessler is the name of an elderly boot maker, part of the short story "Quality".
Step-by-step explanation:
The sentence presented is a compound one, and after rewriting it as a complex one, that becomes a subordinate clause by changing the order of the phrases and by adding some other words. Although a complex sentence may be an independent clause, this one becomes a subordinate clause because its phrases are reversed.