Yes, I did know that Irish story, and was interested in tracing roots to see if there were any related fish-wisdom stories in the Scandinavian tradition.

V. good and helpful thoughts about Jack. What Jack has to learn from Ingrid and Agnes: I will think about that. I remember Tim Powers once saying that it's extremely helpful to find out what your character wants the most and what they fear the most. To drive the plot, try to put those two things in conflict with each other.

I will add all these thoughts to the hopper while pondering. Thanks!