Try this one:

Go to Alfitaria and talk to Knocfelna
-- collect a drop of myrrh --
Go back to Alfitaria and talk to Knocfelna again
-- wait until the year is odd --
Go to Marr's Pass and talk to Te Odo the female Selkie
-- collect a drop of myrrh --
Go to the east side of the Jegon River and talk to the disguised princess
-- leave via land, then return to the east side --
Knocfelna should be hanging around the Jegon River. Talk to him
-- collect another drop of myrrh --
Head over to the Fields Of Fum and find the Knocfelna talking to the princess
-- collect another drop of myrrh --
Go to Leuda by boat and witness Knocfelna's heated discussion with the princess. Talk to both of them, then leave
-- collect a drop of myrrh --
Return to Leuda and talk to the princess and Knocfelna again
-- leave via land and return to Leuda --
View cutscene
-- go all the way back to Alfitaria --
View cutscene
-- accept the gift of 100,000 gil from the princess --

what?