The Christian Roman Empire series

Evolution

I. Peter
II. Linus
III. Cletus
IV. Clement I
V. Anencletus
VI. Evaristus
VII. Alexander
VIII. Xystus I
IX. Telesphorus
X. Hyginus
XI. Pius I
XII. Anicetus
XIII. Soter
XIV. Eleutherius
XV. Victor
XVI. Zephyrinus
XVII. Callistus I
XVIII. Urbanus I
XIX. Pontianus (230-235)
XX. Anteros (235-236)
XXI. Fabianus (236-250)
XXII. Cornelius (251-253)
XXIII. Lucius (253-254)
XXIV. Stephen I (254-257)
XXV. Xystus II (257-258)
XXVI. Dionysius (259-268)
XXVII. Felix I (269-274)
XXVIII. Eutychianus (275-283)
XXIX. Gaius (283-296)
XXX. Marcellinus (296-304)
XXXI. Marcellus (308-309)
XXXII. Eusebius (309 or 310)
XXXIII. Miltiades (311-314)

XXXIV. Sylvester (314-335)
XXXV. Marcus (336)
XXXVI. Julius I (337-352)
XXXVII. Liberius (352-366)
XXXVIII. Felix II (355-358)
XXXIX. Damasus (366-384)
XL. Siricius (384-399)
XLI. Anastasius I (399-401)
XLII. Innocent I (401-417)
XLIII. Zosimus (417-418)
XLIV. Boniface I (418-422)
XLV. Celestine I (422-432)
XLVI. Xystus III (432-440)
XLVII. Leo I (440-461)
XLVIII. Hilary (461-468)
XLIX. Simplicius (468-483)
L. Felix III (483-492)
LI. Gelasius (492-496)
LII. Anastasius II (496-498)
LIII. Symmachus (498-514)
LIV. Hormisdas (514-523)
LV. John I (523-526)
LVI. Felix IV (526-530)
LVII. Boniface II (530-532)
LVIII. John II (533-535)
LIX. Agapitus (535-536)
LX. Silverius (536-537)
LXI. Vigilius (537-555)
LXII. Pelagius I (556-561)
LXIII. John III (561-574)
LXIV. Benedict I (575-579)
LXV. Pelagius II (579-590)