→Arrival of Archimandrite Petros
Prior to the establishment of this diocese, there were still several independent Greek parishes in North America that had not been regularized by [[Athenagoras I (Spyrou) of Constantinople|Archbishop Athenagoras]], who had been going from parish to parish for several years, bringing independents into the fold of the [[Greek Orthodox Archdiocese of America|Greek Archdiocese]]. These independent parishes sometimes looked to Greece for [[priest]]s, and sometimes turned to [[episcopi vagantes|vagante bishops]] such as [[Christopher (Contogeorge) of Pentapolis|Christopher Contogeorge]]. The situation in general in the 1930's and 40's was one of ecclesiastical confusion, and [[Church Calendar|Old Calendarism]] ''per se'' could be seen in some cases as a side effect of the parish remaining independent rather than as a purely idealogical position.
Arrival of Archimandrite Petros ==
In 1951, [[Archimandrite]] [[Petros (Astyfides)]] arrived in New York at the invitation of [[Arsenios Saltas]], whom he understood to be the Greek Old Calendarist [[bishop]] of America. Soon learning that this was not the case, Archimandrite Petros resolved to return to Greece. However,
two women in Queens persuaded him to begin services for them, and by 1954 [[Saint Markella's Cathedral]] was established.
Archimandrite Petros began to gather various independent parishes until a diocese was formed. During this time, he was under the [[Metropolia]] and then the [[ROCOR]]. Two ROCOR bishops--[[Seraphim]] and [[Leonty]]--[[consecration of a bishop|consecrated]] him to the episcopacy in November 1962. This consecration was not technically canonical, as it was done in secret; however, by 1969 the ROCOR had recognized the necessity of this and other Old Calendarist consecrations, and recognized the Greek Old Calendarist bishops. At this time, Metropolitan Petros joined with the Synod in Greece officially.