William K. Vanderbilt was an American businessman and a prominent member of the Vanderbilt family, known for their significant influence in the railroad and shipping industries during the 19th century. Born on December 12, 1849, he was the grandson of Cornelius Vanderbilt, the founder of the Vanderbilt fortune. William K. played a crucial role in managing and expanding the family's business interests, particularly in railroads. In addition to his business ventures, William K. Vanderbilt was also known for his lavish lifestyle and contributions to the arts. He was an avid collector of fine art and owned the famous Vanderbilt Mansion in New York. His legacy includes not only his business achievements but also his impact on American culture and society.