Abbreviations:

Ab.=Abbot,
Ap.=Apostle,
appr.=approximately,
Archb.=Archbishop,
B.=Bishop,
B.C.=Before Christ,
C.=Confessor,
D.=Deacon,
M.=Martyr,
Miss.=Missionary,
P.=Presbyter,
V.=Virgin,
W.=Widow,
† =died.
 
A doubled letter makes the abbreviation plural. E.g. BB.= Bishops.