Ulysses Simpson "Buck" Grant Jr. (July 22, 1852 – September 25, 1929) was an American attorney and entrepreneur. He was the second son of President Ulysses S. Grant.
Grant was born in Bethel, Ohio on July 22, 1852. He graduated from Harvard University in 1874 and Columbia Law School in 1876.
He served as personal secretary to his father while he was president and as Assistant United States Attorney in New York.
Grant then worked in private practice and became wealthy. He partnered in a banking and brokerage firm with Ferdinand Ward. Grant and his father each put $100,000 in the firm and asked veterans and millionaires to invest.
The Grants thought that they would share one-half of the profits from the firm, but realized that Ward was only interested in using the Grant name for his own interests. The firm went bankrupt, and the Grants lost everything. Ward was convicted of fraud and served over 6 years in prison.
When Buck was back on his feet financially, he bought Merryweather Farm in Salem Center, Westchester County, New York. His wife's health was failing. Grant's mother suggested moving to California. His younger brother, Jesse Root Grant, was already living in San Diego. The Grants moved into a three-story house in San Diego in 1893.
Grant set up a law practice, then gave it up to invest in real estate. He purchased property throughout San Diego. In 1895, he bought the Horton House hotel. He wanted to run the hotel and name it after his father. In 1905, he razed the old hotel and built a new one, the U.S. Grant Hotel, in 1910. San Diego voters helped finance $700,000 for the $1.5 million needed to construct the hotel after Grant lacked the funds to do so. During his time in San Diego, Grant became a close associate of Charles T. Hinde, E.S. Babcock, and John D. Spreckels. Hinde and Grant served on the boards of directors of multiple banks and invested in many companies and business ventures together.