Hercules Mulligan

Hercules Mulligan arrived in New York from Ireland as a child and grew up in the city's commercial world, eventually establishing himself as a successful tailor with a shop that served the merchant and professional classes of colonial Manhattan. He developed connections across the social spectrum of the city, and his friendship with Alexander Hamilton — whom he housed when Hamilton first arrived as a student — placed him in the orbit of the emerging patriot leadership. When the Revolution began, Mulligan's position as a tradesman who fitted clothing for wealthy clients gave him a cover that would prove more useful than any military commission.

After the British occupation of New York began in September 1776, Mulligan continued to operate his tailor shop, serving British officers and officials whose patronage gave him regular access to military gossip and operational planning. Through his brother Hugh, a merchant with business connections among the British officer corps, and through his own careful cultivation of customer relationships, Mulligan gathered intelligence about British troop movements and intentions. He passed what he learned to Washington's Culper spy network through contacts that have been only partially reconstructed. He is credited with at least two instances in which his advance warning allowed Washington to avoid capture — once when British forces planned to intercept Washington on a planned route and once when a similar trap was laid.

Mulligan's double life required extraordinary nerve, sustained over years, under conditions where discovery would have meant execution. After the British evacuation in 1783, Washington reportedly visited Mulligan's shop on the morning after his return to New York, publicly breakfasting there in a gesture that was understood by those who knew the full story as a tribute to the tailor's wartime service. Mulligan lived in New York until 1825, his contribution to American independence long acknowledged by those close to Washington but only widely recognized by historians in later generations.