William Erigena Robinson (May 6, 1814 – January 23, 1892), often referred to by his pseudonym Richelieu, was an Irish-American journalist and politician from New York.

William Erigena Robinson was born in Unagh, near Cookstown, County Tyrone on the island of Ireland (the entirety of which was then part of the U.K.).

Robinson emigrated to the United States and settled in New York City in November 1836.

In 1843, Robinson served as assistant editor of the New York Tribune in 1843 and its only Washington correspondent, writing under the name of "Richelieu".

This article incorporates public domain material from the Biographical Directory of the United States Congress