Fenwick Island in Sussex County, Delaware — The American Northeast (Mid-Atlantic)

Transpeninsular Line

Photographed by Allen C. Browne, February 9, 2013

1. Transpeninsular Line Marker

Inscription. This stone monument, erected April 26, 1751, marks the eastern end of the Transpeninsular Line surveyed 1751-1751 by John Watson and William Parsons of Pennsylvania and John Emory and Thomas Jones of Maryland. This line established the east-west boundary between Pennsylvania’s “Three Lower Counties” (now Delaware) and the Colony of Maryland. It established also the middle point of the peninsula, 35 miles to the west. The stone bears the coat of arms of the Calverts on the south side and the Penns on the north. It was accepted 1760 and finally ratified 1769 by King George III.

Erected 1986. (Marker Number S.C.-74.)

Topics and series. This historical marker is listed in these topic lists: Colonial Era • Political Subdivisions. In addition, it is included in the Delaware Public Archives series list. A significant historical date for this entry is April 26, 1751.

Location. 38° 27.079′ N, 75° 3.297′ W. Marker is on Fenwick Island, Delaware, in Sussex County

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. It is on Lighthouse Road (Delaware Route 54) near Coastal Highway ( Route 1) when traveling south. Touch for map. Marker is in this post office area: Fenwick Island DE 19944, United States of America. Touch for directions.

Regionally, this marker is on Delaware’s Beaches.

It is also in the American Mid-Atlantic

and on the Delmarva Peninsula.

Globally, it is in the North Atlantic Region,

North America,

the Western Hemisphere,

the Western World,

and the Anglosphere.

Historically, it finds itself in what was once New Netherland,

one of the original Thirteen Colonies,

and the Antebellum South.

Other nearby markers. At least 5 other markers are within walking distance of this marker: Mason and Dixon Line-Survey Start (here, next to this marker); The Fenwick Island Lighthouse (here, next to this marker); Australia (about 700 feet away, measured in a direct line); Eastern End of Transpeninsular Line Between Maryland and Three Lower Counties of Pennsylvania (about 800 feet away in Maryland); Fiesta City Park (approx. 0.4 miles away in Maryland). Touch for a list and map of all markers in Fenwick Island.

Other markers no longer nearby. The History of the Lighthouse (was here, next to this marker but has been permanently removed); a different marker also named Fenwick Island Lighthouse (was here, next to this marker but has been permanently removed).

More about this marker. The marker is located at the foot of Fenwick Island Lighthouse.

Regarding Transpeninsular Line.

Photographed by Devry Becker Jones (CC0), October 5, 2024

2. Transpeninsular Line Marker

The marker has weathered somewhat and the paint has faded, although the text remains legible.

The line goes 69 miles due west across Delmarva to Taylor’s Island.

Also see . . . Fenwick Island Lighthouse. Lighthouse Friends entry. (Submitted on June 23, 2007.)

Photographed by F. Robby, December 8, 2007

3. Transpeninsular Line Marker

Photographed by Ann and Ray Wilson of Wheeling, WV, circa 2000

4. Transpeninsular Line Marker

Fenwick Island Lighthouse image. Click for full size.

Photographed by Ann and Ray Wilson of Wheeling, WV, circa 2000

5. Fenwick Island Lighthouse

The Transpeninsular Line marker can be seen in the distance at the bottom right in the photo, at the foot of Fenwick Lighthouse and slightly in front of the solar panel.

Photographed by Allen C. Browne, February 9, 2013

6. Transpeninsular Line Marker

Photographed by Allen C. Browne, February 9, 2013

7. Transpeninsular Line Marker

Transpeninsular Line image. Click for more information.

courtesy of Wikipedia

8. Transpeninsular Line

The Transpenisular Line bisects the Delmarva peninsula, running from Fenwick Island on the east to Taylor's Island on the west. Mason and Dixon's Tangent Line intersects the Transpenisular Line at its center point.
Click for more information.

The Penns' coat of arms on the north side of the stone. image. Click for full size.

9. The Penns' coat of arms on the north side of the stone.

The Calverts' coat of arms on the south side of the stone. image. Click for full size.

10. The Calverts' coat of arms on the south side of the stone.

Boundary Marker on the top of the Stone Monument image. Click for full size.

11. Boundary Marker on the top of the Stone Monument

Boundary Marker at Transpeninsular Line image. Click for full size.

Photographed by Ian Lefkowitz, May 4, 2024

12. Boundary Marker at Transpeninsular Line

Credits. This page was last revised on April 2, 2025. It was originally submitted on June 23, 2007, by Heather Crawford of Newark, Ohio. This page has been viewed 4,820 times since then and 85 times this year. Photos: 1. submitted on February 16, 2013, by Allen C. Browne of Silver Spring, Maryland. 2. submitted on October 6, 2024, by Devry Becker Jones of Washington, District of Columbia. 3. submitted on December 30, 2007, by F. Robby of Baltimore, Maryland. 4, 5. submitted on June 23, 2007, by Heather Crawford of Newark, Ohio. 6, 7. submitted on February 16, 2013, by Allen C. Browne of Silver Spring, Maryland. 8. submitted on February 21, 2013, by Allen C. Browne of Silver Spring, Maryland. 9, 10. submitted on October 17, 2007, by Kevin W. of Stafford, Virginia. 11. submitted on October 18, 2007, by Kevin W. of Stafford, Virginia. 12. submitted on March 19, 2025, by Ian Lefkowitz of New York, New York. • J. J. Prats was the editor who published this page.