The Gesta crucigerorum Rhenanorum[1] ('Deeds of the Rhineland Crusaders')[2] is an anonymous Latin eyewitness account of the Fifth Crusade written by a cleric from Neuss who travelled with a fleet from the Rhineland.
There is an English translation of the first part covering the siege of Alcácer do Sal.
[5] Georg Waitz suggested that the Gesta was written by the same Goswin who wrote the Carmen de expugnatione Salaciae, a poem about the siege of Alcácer.
[6] Unlike the Carmen, the Gesta does not report any miracles in connection with the capture of Alcácer.
[3][7] The Gesta was used as a source by Caesarius of Heisterbach and was incorporated with some modifications into the third continuation of the Chronica regia Coloniensis.