Canon 797

1. If an impediment is discovered after everything is prepared

for the celebration of the marriage and the marriage cannot be

delayed without probable danger of serious harm until a dispensation is obtained from the competent authority, the power of dispensing from all impediments except those mentioned in can. 795,

1, nn. 1 and 2 is held by the local hierarch and, provided the

case is occult, all persons mentioned in can. 796, 2, observing

all the conditions prescribed in the canon. 2. The faculty is

also operative for the convalidation of a marriage if there is

the same danger in delay and there is not sufficient time to have

recourse to the competent authority.