I wonder about the phrase widow's peak as architectural. Some old 1800 and early 1900 homes near the ocean had a look out tower on the top floor over looking the ocean. Is it a widows peak?

What you are referring to is a "widow's walk", a place where one could watch for the return of a ship. A widow's peak is a hair term...the hairline descends to a point near the center of your forehead.