Question: Florin, Pennsylvania was known for being a stop off a railroad established in what year?

Context paragraphs:
Batesville Southwestern Railroad: The Batesville Southwestern Railroad was a shortline railroad established in 1910 and built jointly by Illinois Central Railroad and R. J. Darnell, a local lumber mill owner.  Construction of the line started in 1911 and was completed in 1914.  The line extended from Batesville to Crowder and primarily hauled lumber to Darnell's mill.  In 1931, the lumber mill closed down and both parties agreed to abandon the line.

Greenwood, Anderson and Western Railway: The Greenwood, Anderson and Western Railway was a South Carolina railroad established in the late 19th century.

Charleston Southern Railway: The Charleston Southern Railway was a South Carolina railroad established in the early part of the 20th century.

Pennsylvania Railroad: The Pennsylvania Railroad (reporting mark PRR) (or Pennsylvania Railroad Company and also known the "Pennsy") was an American Class I railroad that was established in 1846 and was headquartered in Philadelphia, Pennsylvania.  It was called the Pennsylvania Railroad because it was established in the state of Pennsylvania.

South Side, Providence, Rhode Island: The South Side of Providence, Rhode Island, originally South Providence, is a term frequently used to describe the collective region comprising the official neighborhoods of Upper and Lower South Providence, Elmwood and the West End.  The name was first used in the 1830s when the New York, Providence and Boston Railroad established its first station at a pier on the Providence River on a point of land about one half mile south of downtown Providence.  The station was named South Providence.

Orange Belt Railway: The Orange Belt Railway was a narrow gauge railroad established in 1885 by Russian exile Peter Demens in Florida.  It was one of the longest narrow gauge railroads in the United States at the time of its completion in 1888, with a mainline 152 miles in length between Sanford, Florida and St. Petersburg, Florida.  It carried citrus, vegetables, and passengers; and it interchanged with two standard gauge lines: the Jacksonville, Tampa and Key West Railway at Lake Monroe, Florida and the Florida Central and Peninsular Railroad at Lacoochee, Florida.

South Heights, Pennsylvania: South Heights is a borough in Beaver County, Pennsylvania, along the Ohio River.  The population was 475 at the 2010 census.  South Heights was first known as Ethel's Landing, a docking point on the Ohio River.  The name of the town was changed to Shannopin when the Pittsburgh and Lake Erie Railroad established a station there.  When the name of the town was changed to South Heights, the station became known as South Heights Station.

Tri-City Railroad: The Tri-City Railroad (TCRY) is an American Class III railroad established in 1999.  Tri-City Railroad is the Union Pacific Railroad agent and handling carrier in Richland, Washington.  It was founded in 1999 by Randolph Peterson and is still owned by the Peterson family.

Fremont, Elkhorn and Missouri Valley Railroad: The Fremont, Elkhorn and Missouri Valley Railroad (FE&MV), sometimes called "the Elkhorn," was a railroad established in 1869 in the state of Nebraska in the Midwestern United States.

Florin, Pennsylvania: Florin, Pennsylvania was known for being a stop off the Pennsylvania Railroad.  The Lancaster County, Pennsylvania populated place uses the zip code 17552.  The locality is located within East Donegal Township, Lancaster County, Pennsylvania.

Supporting paragraphs: Florin, Pennsylvania Pennsylvania Railroad
Answer: 1846