The History of the Normans - Amato (di Montecassino), Aimé du Mont-Cassin, Amatus of Montecassino, Prescott N. Dunbar, Amatus Casinensis, Graham A. Loud, G. A. Loud - Google Books

https://books.google.de/books?id=Gop3g_fuNQQC&pg=PA1&dq=Richard+I.+von+capua+1024&hl=de&source=gbs_toc_r&cad=2#v=onepage&q=Richa

Amatus of Montecassino was the earliest historian of the Norman conquest of southern Italy and Sicily. His History of the Normans, written c.1080, includes the sieges of Bari and Salerno, the conquest of Sicily, Robert Guiscard's brigand's life, as well as…