William McCloundy

William McCloundy (born 1859 or 1860),{{cite news | url = http://www.barrypopik.com/index.php/new_york_city/entry/buy_sell_the_brooklyn_bridge/ | title = CONFIDENCE MAN JAILED.; McCloundy, Who Once Sold the Brooklyn Bridge, Faces Life Term. | date = 1928-07-08 | page = 21 | work = The New York Times }} also known as I.O.U. O'Brien,{{cite news | url = https://www.nytimes.com/2005/11/27/nyregion/thecity/27brid.html?ex=1290747600&en=d5b19f580f176c64&ei=5090&partner=rssuserland&emc=rss | title = For You, Half Price | first = Gabriel | last = Cohen | date = 2005-11-27 | work = The New York Times }} was an early 20th-century confidence trickster, from Asbury Park, New Jersey, who served a two-and-a-half-year prison term in Sing Sing for "selling" the Brooklyn Bridge to a tourist in 1901.