Cause of his death was Angina Pectoris.
North Carolina Death Certificate
Bismarck married Louella Pritchard, daughter of David Thomas Pritchard and Alice Virginia Cox. (Louella Pritchard was born on 28 Jul 1874 in Camden Co., NC, died on 21 Dec 1942 in Ahoskie, Hertford Co., NC and was buried on 22 Dec 1942 in Ahoskie Cemetery, Hertford Co., NC.) The cause of her death was Carcinoma - Gastro Intestinal.