Boy Kills Mother in Accident; Tragic Death of Patterson Lady Visiting at Stevinson; A shocking tragedy at Stevinson Sunday brought death to Mrs. Margaret C. Silveira, 30 wife of Albert Silveira, Walnut Avenue rancher, with her own son as the cause, the accidental discharge of a shotgun inflicting fatal injuries. The case appears to have been one unusually free from blame to anyone concerned. The gun belonged to Mrs. DeCoit's son, who had taken it out for some purpose the day before and put it back where it usually stood, behind a door, without removing the load, though he believed he had done so. As there were no children living at the place there was no special risk involved. But Mrs. Silveira and her 8-years old son William arrived on a visit, and the younger naturally got his hands on the gun,. The family says that he did not intentionally aim it and there was no playful threat as stated. He merely took out the gun, a small .410 gauge shotgun, when he was told to put it back, and tried to do so. The only theory that fits with the facts is the hammer must have caught as he drew the gun out, and when he pushed it back the gun was discharged. The boy was on the porch and his mother inside the kitchen, but near enough so that the load struck in a compact pattern, most of the shot entering the left upper lung.