Hello, Ollie, My Capt. Wm Niell was O'Niell in Ireland where he was born. His father was Wm O'Niell as well. Capt. Niell dropped the "O" in America. I am sorry I cannot answer your questions about Daniel Neale.
I can see no brothers for Capt. Wm Niell named Daniel. Nor are any of his children, -he had thirteen- with his wife, Mary "Polly" Clinton, named Daniel.