What did Becky Thatcher's father do for a living in "The Adventures of Tom Sawyer"?

"The Adventures of Tom Sawyer" by Mark Twain is an 1876 novel about a young boy growing up along the Mississippi River. It is set in the fictional town of St. Petersburg, inspired by Hannibal, Missouri, where Twain lived.

Tom falls in love with Becky Thatcher, a new girl in town, and persuades her to get "engaged" by kissing him. But their romance collapses when she learns Tom has been "engaged" previously to Amy Lawrence.

Judge Thatcher is Becky's dad, and, as his name suggests, he's a judge. Judge Thatcher is the closest thing Tom has to a role model; he's a fine father and a good citizen. He searches tirelessly for Becky and Tom when they get lost in the cave and takes the utmost care in making sure that no one ever gets lost again by sealing the cave off with a big old metal door. His judgment is, perhaps, not entirely sound. At the end of the book, he comes to believe that Tom will end up being a great soldier or a lawyer.

According to an October 2012 article published in Smithsonian magazine, Twain named Tom Sawyer after a San Francisco fireman whom he met in June 1863. The real Tom Sawyer was a local hero, famous for rescuing 90 passengers after a shipwreck. The two remained friendly during Twain's three-year stay in San Francisco, often drinking and gambling together.