"that gentleman who, in the Harlot's Progress, is seen correcting the ladies in Bridewell"

In the fourth plate of William Hogarth's The Harlot’s Progress, Mary is in Bridewell Prison, beating hemp for the hangman's noose.  The jailer is bossing the women about.  Fielding tells us that Thwackum, Tom’s sadistic tutor, looks just like the nasty jailer. 

The Harlot's Progress, Mary in Bridewell
Public DomainThe Harlot's Progress, Mary in Bridewell - Credit: William Hogarth