imperial timeline during the period of 'the skystone'

Table excerpt courtesy The Roman Empire  (sans minor usurpers)
biography links from De Imperatoribus Romanis

Split of the Empire - Western Empire
364 - 375	Valentinian I (c. 321 - 375)	Flavius Valentinianus / Imperator Caesar Flavius Valentinianus Augustus	House of Valentinian, emperor in the west
367 - 383	Gratian (c. 359 - 383)	Flavius Gratianus / Imperator Caesar Flavius Gratianus Augustus	House of Valentinian, emperor in the west
375 - 392	Valentinian II (c. 371 - 392)	Flavius Valentinianus / Imperator Caesar Flavius Valentinianus Augustus	House of Valentinian, emperor in the west
379 - 395	Theodosius I The Great (c. 347 - 395)	Flavius Theodosius / Imperator Caesar Flavius Theodosius Augustus	Theodosian Dynasty / joint emperor in the west, emperor in the east
383 - 388	Magnus Maximus (c. 335 - 388)	Magnus Maximus	Rival in the west
392 - 394	Eugenius (c. ? - 394)	Flavius Eugenius	Usurper in the west
395 - 423	Honorius (c. 384 - 423)	Flavius Honorius	Theodosian Dynasty

Split of the Empire - Eastern Empire
364 - 378	Valens (c. 328 - 378)	Flavius Julius Valens / Imperator Caesar Flavius Julius Valens Augustus	House of Valentinian, emperor in the east
365 - 366	Procopius (c. ? - 366)		usurper to Valens
379 - 395	Theodosius I The Great (c. 347 - 395)	Flavius Theodosius / Imperator Caesar Flavius Theodosius Augustus	Theodosian Dynasty / joint emperor in the west, emperor in the east
395 - 408	Arcadius (c. 377 - 408)	Flavius Arcadius / Imperator Caesar Flavius Arcadius Augustus	Theodosian Dynasty

The Skystone (The Camulod Chronicles, Book 1)
by Jack Whyte