Texas ? The unmarked grave of a woman who was a well-known madam now memorializes her profession, more than a century after she made a name for herself.

A group of Fort Worth historians placed a granite stone with the inscription “Call Me Madam” on Friday at the resting place of Mary Porter, who operated a brothel — or what was then euphemized as a “female boardinghouse.”

Donna Donnell, a member of the North Fort Worth Historical Society, began digging into records two years ago in search of information about Porter, the Fort Worth Star-Telegram reported Saturday.

“Mary was a fascinating person,” said author Richard Selcer, whose new book, “Fort Worth Characters,” is to be published this fall. “Even if her lifestyle wasn’t admirable, everyone deserves to be remembered.”