Dossier 3654Historic SiteMedium 68

Marietta House

Glenn Dale, Maryland1 min readFile amended October 2, 2026Directions

Marietta House is a historic site in Glenn Dale, Maryland, an NPS Network to Freedom. The 1812 house—where the judge’s enslaved worked. The archive files it under Underground Railroad history, the Underground Railroad and African American history. The dossier holds 3 documented facts — the record is history-forward, no paranormal claims on file. The site is open to visitors.

Archive note: 3 sources on file

Status

Operating

Access

Open to public

Designation

NPS Network to Freedom

Coordinates

38.984, -76.800 · Approximate (city centroid)

Signal: cold trace

Is Marietta House haunted?

No claims are filed here — the record keeps this place for its documented history, not for a haunting on file.

Dark History Historic Sites

The record — long form

Marietta is the judge's plantation — Gabriel Duvall's 1813 Federal house, the Supreme Court justice who enslaved forty. The paradox was the lawyer — the 120 freedom suits he won, the Butler petition he fought. The generations were the labor — the Ducketts and Butlers and Jacksons, the tobacco that was the crop.

The office is the remnant — the brick law building beside the house, the root cellar that's the ruin. The museum is the reckoning — the database of the enslaved names, the tour that tells both sides. Marietta is the contradiction — the justice who freed others' slaves and kept his own, the plantation that's the museum now.

The file keeps Marietta: the 1813 house, Duvall's dual role, the enslaved families, and the law office.

Marietta is the archive's Glenn Dale file — the justice's slave plantation.

Why this file matters

Marietta is the archive's Glenn Dale file — the Supreme Court enslaver.

A house keeps its paradox — the file's suggestion being that Marietta's hold is the split: the lawyer who won freedom suits, the justice who held forty, and the museum that shows both.

Documented history

NPS includes this site in the National Underground Railroad Network to Freedom. Marietta House's past is on record — the entry belongs to the verified layer the museum itself interprets. The fact is historically verified — the part of the file that doesn't need hedging. The detail is preserved in 'Public NPS Network to Freedom listings, row 2, ID 01GA01'. The detail belongs to the verified spine of the entry.
Verified historyNational Park Service
Marietta House is documented on the National Park Service Network to Freedom for its role in the Underground Railroad. Marietta House's past is on record — the entry belongs to the verified layer the museum itself interprets. It's verified history: the dossier's load-bearing detail. The record appears in 'NPS Network to Freedom listing'. Documented ground is what separates this file from pure legend — this is part of it.
Verified historyNational Park Service
The 1812 house is documented. The site's documented history is the record the rest of the file stands on. The fact is historically verified — the part of the file that doesn't need hedging. The detail is preserved in 'NPS Network to Freedom listing'. The entry's timeline holds it; the lore holds the rest.
Verified historyNational Park Service