Purge of MMDCCLXI (Nova Roma)
Mere months after obtaining the offices of Pontifex and Consul, Consul Piscinus Horatianus obtained a Senatus Consultum forbidding owners of any official mailing list to deny membership as an observer to any Senator who wished it. With this in hand, he demanded that Pontifex Maximus M. Cassius Iulianus add Senators to the Collegium Pontificum list. Cassius saw this demand as rude and improper, and delayed doing so.
As the debate grew increasingly heated, the resignations began.
C. Iulius Scaurus
On a.d. IV Kal. Feb. ‡, Pontifex C. Iulius Scaurus, in a posting to the Collegium Pontificum list, voluntarily resigned his offices and citizenship in protest of the "Christians, atheists, and political appointees" attempting to assert control over the priesthood. 
M. Octavius Gracchus
On prid. Non. Feb. ‡, Senator and Consular M. Octavius Gracchus, in a posting to the main list, resigned from the Senate and "retired to private life", citing his disgust with the "scheming" and "paranoia" of persons he had once liked and respected. Octavius had been among the first ten people to join Nova Roma in Fl. Vedio M. Cassio cos. ‡ MMDCCLI a.u.c., and had been an active Senator since Q. Maximo M. Minucio cos. ‡ MMDCCLIII a.u.c.. He had recently been voted a message of thanks for his services by the Senate, making his departure all the more tragic.
L. Equitius Cincinnatus
On a.d. X Kal. Mar. ‡, Senator, Consular and Pontifex L. Equitius Cincinnatus Augur was stripped of all his titles and even his Assiduus status, being demoted to the status of Capite Censi, resulting from a legal action initiated by Pontifex and Censor Modianus, for refusing to admit the latter to mailing lists owned by Lucius Equitius. Not only did the Praetores - both members of Censor K. Buteo Modianus's cohort - issue a default judgement against Lucius Equitius, but they added an additional penalty to the sentence due to his refusal to participate in the trial: he was fined $300, the most severe punishment in Nova Roma's history, for the invented charge of failing to appear for trial.
The harsh treatment of Lucius Equitius caused the recently-departed Octavius to return to the main list, and to inform the Censores that the free technical support he had been providing "stops, now". Censor Ti. Galerius Paulinus, as advocatus for Lucius Equitius, demanded the right of provocatio. Cn. Iulius Caesar also became an outspoken advocate of justice for Lucius Equitius. In a message to the main list, Lucius Equitius accepted accepted Paulinus as advocate.
As of this writing, the matter is unresolved, and the outcome uncertain.
M. Cassius Julianus
prid. Kal. Mar. ‡, publication of Collegium Pontificum voting results revealed that Pater Patriae M. Cassius Julianus had been removed from the offices of Pontifex Maximus and Pontifex by a 6 to 1 vote. Pontifices M. Cassius Iulianus and L. Equitius Cincinnatus were not recorded as having voted, though both had been invited to the list a.d. VII Kal. Mar. ‡.
Cassius was removed the day after the tenth anniversary of his founding of Nova Roma, marring the anniversary celebrations.
Patricia Cassia, Senatrix for eight years, long-serving CFO of Nova Roma, had been threatened with legal action by Consul M. Piscinus in January for alleged slowness in transferring financial control to the new CFO. On a posting to the NovaRoma-Announce list a.d. VI Kal. Apr. ‡, she resigned citizenship without an explanation. This announcement came a day after a new Pontifex Maximus was appointed to the position that Patricia's husband, M. Cassius Iulianus, had created and held for exactly ten years.