William Henry Shippee was born on March 26, 1844, in Killingly, Connecticut, to Willis H. Shippee and Amy Watkins. His father was a farmer. Shippee grew up and attended school in Killingly. By 1860, he was working as a farm laborer in Foster, Rhode Island. He enlisted in the Union army on January 4, 1864, and mustered in as a private in Company D of the 1st Connecticut Heavy Artillery. The regiment took part in the Siege of Petersburg and the Appomattox Campaign. He was promoted to corporal on July 10, 1865, and he mustered out in Washington, D.C., on September 25, 1865.
Shippee returned to Connecticut after the war. He married Betsey A. Eaton around 1886, and they had at least three children: Bertha, born around 1887; Cora, born around 1889; and Fannie, born around 1893. The family lived in Killingly, and Shippee worked as an antiques dealer. He applied for a federal pension in February 1888 and eventually secured one. He went blind sometime before 1917. He moved to Danielson, Connecticut, sometime in the 1920s, and he died on July 11, 1931.