In October 1877, John Diedrich Spreckels married Lillie Siebein in Hoboken, New Jersey, and together they had four children: Grace (born September 1878), Lillie (born November 1879), John (born April 1883), and Claus (born March 1888). They first lived in the Kingdom of Hawaii and then in San Francisco. In 1887, Spreckels visited San Diego on his yacht "Lurline" to stock up on supplies. Impressed by the real estate boom then taking place, he invested in the construction of a wharf and coal bunkers at the foot of Broadway (then called "D" Street). That boom ended soon but Spreckels' interest in San Diego would last for the rest of his life.