Fr. John Jay Hughes and and Fr. Leonard Graham were both conditionally reordained sub conditione to the Priesthood.
An interesting question is how solid is the decree regarding the validity of Anglican orders?
The decree is utterly irreformable and is infallible. However, the decree is a dogma of historical circumstances and applied to the historical situation of 1896 in the CofE and ECUSA, not 2005 in the TAC and among FIF.
Is there such a thing as conditional Holy Orders? If there is even a slight doubt about the validity of these orders how should one proceed?
It is called reordination sub conditione. If there is the slightest doubt that an Anglican Minsiter might have valid orders, he is reordained sub conditione to avoid profanation. If there were some absolute proof he did have valid orders (say he was ordained by a Old Catholic or Polish National Bishop), he would simply be accepted into communion and and a clerical office by confession.
Thank you for that most informative reply to my question.