Henry O'Reilly

Lore & Background

Henry O'Reilly was born in Carrickmacross, County Monaghan, Ireland, and emigrated with his father to New York City in 1816, where he changed the spelling of his surname to O'Rielly. He later moved to Rochester, New York, with his friend Luther Tucker and organized the Rochester Daily Advertiser. Active in Jacksonian politics, he was appointed to the Rochester post office by postmaster Amos Kendall, and chose a young Scottish immigrant, James D. Reid, as his assistant. He married Marcia Brooks, daughter of Micah Brooks, in 1830.

O'Reilly was a civic figure in Rochester, advocating for the deepening and improvement of the Erie Canal and promoting a change in the city charter in 1841 to support free public education. He was elected to the subsequent Board of Education and became president of the Young Men's Association, which created the first public library in the city. He also authored early surveys of Rochester, including a fourteen-page tract in 1835 and a larger work, Sketches of Rochester, in 1838.

As a telegraph entrepreneur, O'Reilly signed an ambiguous contract on June 13, 1845, with Amos Kendall, agent of Samuel Morse, for a telegraph line from the eastern seaboard to the Great Lakes. With others he formed the Atlantic, Lake & Mississippi Valley Telegraph system, composed of six independent units including the Atlantic & Ohio Telegraph Company, whose superintendent was James D. Reid. The ambiguity of the contract and O'Reilly's aggressive interpretation led to conflict with Kendall and an acrimonious court action.

Reader's Guide

The legal case O'Reilly v. Morse, which arose from the ambiguous contract and O'Reilly's aggressive interpretation, has been highly influential in the development of the law of patent-eligibility. This case set important precedents regarding the scope of patent rights, particularly in the context of emerging technologies like the telegraph. O'Reilly's telegraphy empire declined after he lost this case. His role in early telegraph expansion, despite the legal conflict, marks him as a significant figure in the history of American telecommunications. His work with the Atlantic, Lake & Mississippi Valley Telegraph system contributed to the rapid spread of telegraph lines across the eastern United States and toward the Great Lakes, a critical infrastructure development of the mid-19th century.

Did You Know?

• Henry O'Reilly changed the spelling of his surname to O'Rielly after emigrating to New York City in 1816.
• He was one of the first authors to write a survey of Rochester, New York, with a fourteen-page tract in 1835.
• O'Reilly signed an ambiguous contract with Amos Kendall, agent of Samuel Morse, on June 13, 1845.
• The legal case O'Reilly v. Morse has been highly influential in the development of patent-eligibility law.