Who is Ethan Quinn from Chesapeake Blue and what is their importance?

Ethan Quinn is a waterman. He is married to Grace, and the couple has two daughters and one son. Their daughter Emily belongs to the American Ballet Company and is going to New York to pursue her dancing career. Their daughter Aubrey works at the family boat yard. Deke, the couple's only son is described as a quiet, intelligent, young man, who is happiest when sailing.
Ethan is a man who has himself under control. Though he may become angry, his eyes are the only indication that anything is wrong. Instead, he is calmly logical, and works his way to the best solution possible.