In the same dwelling in which his wife-sorrowing over the death of their son following a tonsilectomy-had shot herself to death. George A. Brereton, 67, yesterday put a bullet through his head.

The second tragedy-20 years after the first-occured at 7021 Miramonte Blvd., home of Brereton's daughter, Mrs. Emily Lathrop, according to Firestone Park substation Sherriff's deputies.