Notice how there are TWO distinct ways the "g"s are written: g's who's tails hook the letter below it, and g's who's tails loop back, like in "sight" and wg's own signature. Because the looped "g" is in Deirdre's Grandfather's signature, we can conclude that that "g" is how he typically stylizes it out of habit, and all fish-hook "g" were deliberately written to stand out.
The letters caught on the "fish-hooks" are A H WE FA CE OU D....
No idea what that means though
...but the fact remains that they were deliberately written to point those letters out.