Who is Fagan Pommeroy from Stern Men and what is their importance?

The middle son of Ira and Rhonda Pommeroy, Fagan is the only brother to show ambition when he grows up. Hating the sea, which drowns his father, Fagan moves to a small potato farm inland, where he hopes to be a foreman some day. His letters home bore Rhonda, but she welcomes the little money that he sends.