Jasper Grosvenor was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 financier

Financier

Financier is a term for a person who handles typically large sums of money, usually involving money lending, financing projects, large-scale investing, or large-scale money management. The term is French, and derives from finance or payment...

 of the early to mid 19th century. In 1832 he partnered with Thomas Rogers

Thomas Rogers (locomotive builder)

Thomas Rogers was an American mechanical engineer and founder of Rogers Locomotive and Machine Works of Paterson, New Jersey...

 and Morris Ketchum

Morris Ketchum

Morris Ketchum was an American banker and financier of the 19th century. In 1832 he partnered with Thomas Rogers and Jasper Grosvenor to form the manufacturing firm of Rogers, Ketchum and Grosvenor; this firm eventually grew into Rogers Locomotive Works, the second most popular steam locomotive...

 to form the manufacturing firm Rogers, Ketchum and Grosvenor

Rogers Locomotive and Machine Works

Rogers Locomotive and Machine Works was a 19th-century manufacturer of railroad steam locomotives based in Paterson, in Passaic County, New Jersey, in the United States. It built more than six thousand steam locomotives for railroads around the world. Most railroads in 19th-century United States...

 which became the second most popular steam locomotive

Steam locomotive

A steam locomotive is a railway locomotive that produces its power through a steam engine. These locomotives are fueled by burning some combustible material, usually coal, wood or oil, to produce steam in a boiler, which drives the steam engine...

 manufacturing company in North America

North America

North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 in the 19th century. He remained a partner in the business until his death in 1857.

Jasper lived in New York City

New York City

New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

 with his wife Matilda, on the same upscale city block as William H. Aspinwall (founder of the Pacific Mail Steamship Company

Pacific Mail Steamship Company

The Pacific Mail Steamship Company was founded April 18, 1848 as a joint stock company under the laws of the State of New York by a group of New York City merchants, William H. Aspinwall, Edwin Bartlett, Henry Chauncey, Mr. Alsop, G.G. Howland and S.S. Howland...

 and the Panama Railroad). The Grosvenors were a religious family and were patrons of New York's Church of the Ascension; after Jasper's death, Matilda donated one of the stained glass

Stained glass

The term stained glass can refer to coloured glass as a material or to works produced from it. Throughout its thousand-year history, the term has been applied almost exclusively to the windows of churches and other significant buildings...

 windows in the church, the Grosvenor Memorial by Frederic Crowninshield

Frederic Crowninshield

Frederic Crowninshield was an American artist and author.-Life:Crowningshield was born in Boston on November 27, 1845 into the Crowninshield family....

which depicts "Angels at the Sepulchre," in Jasper's memory. Matilda Grosvenor survived Jasper to die in 1885.