From Wikipedia, the free encyclopedia. Clarence Shepard Day, Jr. (November 18, 1874–December 28, 1935) was an American author. Born in New York City, he attended St. Paul's School and graduated from Yale University in 1896. The following year, he joined the New York Stock Exchange, and became a partner in his father's Wall Street brokerage firm. Day enlisted in the Navy in 1898, but developed crippling arthritis and spent the remainder of his life as a semi-invalid. Day's most famous work is the autobiographical Life with Father (1935), which detailed humorous episodes in his family's life, centering on his domineering father, during the 1890s in New York City. Scenes from the book, along with its 1932 predecessor, God and My Father, and its 1937 sequel, Life with Mother, published posthumously, were the basis for the 1939 play by Howar...read more