Mary Roslin Williams of Mansergh Gundogs
She bred Labs, she hunted over Labs, she competed with Labs and she taught about Labs. She had 7 generations of champions, and 15 or so dogs who won field trial awards. In the early days, she lived in Mansergh Parish, just south of the Lake District, in England.
M R-W taught from practical experience and common sense. Although she's no longer with us, she left behind knowledge that she shared. Take a half hour to listen (although it's a video, the image doesn't change).