[3] In April, the Commune had arrested some 200 clergy to serve as hostages against reprisals from the Versailles government, and to use in possible prisoner exchanges.
In particular, leaders of the Commune hoped to be able to exchange the archbishop of Paris, Georges Darboy, for Louis Auguste Blanqui, but this offer was rebuffed by Adolphe Thiers, president of the Third Republic.
[4] On 26 May, 50 further hostages from la Roquette Prison were executed, this time publicly in rue Haxo.
[5] A chapel was built on the site in 1894, and in 1938 the church in rue Haxo was inaugurated as Notre-Dame des Otages.
[3] On 25 November 2021, Pope Francis recognized five victims of the 26 May killings as martyrs: Henri Planchat, Ladislas Radigue, Polycarpe Tuffier, Marcellin Rouchouze, and Frézal Tardieu.