Editing Honorius (section)

===Death===
Honorius died of [[edema]] on 15 August 423, leaving no heir.<ref name="Jones, pg. 442"/> In the subsequent interregnum [[Joannes]] was nominated Emperor. The following year, however, the [[Eastern Roman Empire|Eastern]] Emperor [[Theodosius II]] installed his cousin [[Valentinian III]], son of [[Galla Placidia]] and [[Constantius III]], as Emperor.
[[File:Vatican - basilique - Vue d’ensemble de l'antique basilique vaticane basilica.jpg|thumb|upright=1.4|left|Reconstruction of [[Old St. Peter's Basilica]] in Rome. The Mausoleum of Honorius is the domed structure at the extreme top left, behind the rotunda Sant'Andrea and the [[Vatican obelisk]].]]
The [[Mausoleum of Honorius]] was located on the [[Vatican Hill]], accessed from the transept of the [[Old Saint Peter's Basilica]]. It was first used for Maria. Probably Thermantia and Honorius's sister Galla Placidia, and perhaps other imperial family members, were later buried there. In the 8th century it was transformed into a church, the [[Saint Petronilla#The Chapel of St. Petronilla|Chapel of St Petronilla]], which held the relics of [[Saint Petronilla|the saint]] and was demolished when the [[St. Peter's Basilica|New St Peter's]] was erected.<ref>{{cite web| url = https://www.cambridge.org/us/catalogue/catalogue.asp?isbn=9780521513715&ss=toc| title = The Roman Imperial Mausoleum in Late Antiquity}}</ref><ref name=Pearce>{{cite web |title=Old St Peters, the Circus of Caligula and the Phrygianum |author=Roger Pearse |work=Roger Pearse's blog |date=16 May 2014 |url=http://www.roger-pearse.com/weblog/2014/05/16/old-st-peters-the-circus-of-caligula-and-the-phrygianum |access-date=1 December 2015}}</ref>

The year 410 also saw Honorius reply to a [[Romano-British|British]] plea for assistance against local barbarian incursions, called the ''Rescript of Honorius''. Preoccupied with the [[Visigoths]], Honorius lacked any military capability to assist the distant province. According to the sixth century [[Byzantine]] scholar [[Zosimus (historian)|Zosimus]], "Honorius wrote letters to the cities in Britain, bidding them to guard themselves."<ref>Zosimus, vi.10.2</ref> This sentence is located randomly in the middle of a discussion of [[southern Italy]]; no further mention of Britain is made, which has led some modern academics to suggest that the rescript does not apply to Britain, but to [[Bruttium]] in [[Roman Italy|Italy]].{{sfn|Birley|2005|pp=461–463}}<ref>Halsall, Guy ''Barbarian migrations and the Roman West, 376–568'' Cambridge University Press; illustrated edition (2007) {{ISBN|978-0-521-43491-1}} pp. 217–218</ref><ref>Discussion in [[Martin Millett]], ''The Romanization of Britain'', (Cambridge: Cambridge University Press, 1990) and in Philip Bartholomew 'Fifth-Century Facts' ''Britannia'' vol. 13, 1982 p. 260</ref>