In December 1973, two months after the resignation of Spiro Agnew, Ford became the first person appointed to the vice presidency under the terms of the 25th Amendment by President Richard Nixon. After the subsequent resignation of President Nixon in August 1974, Ford immediately assumed the presidency. They now called her son Gerald Rudolff Ford Jr. The future president was never formally adopted and did not legally change his name until December 3, 1935; he also used a more conventional spelling of his middle name. He was raised in Grand Rapids with his three half-brothers from his mother's second marriage: Thomas Gardner 'Tom' Ford (1918–1995), Richard Addison 'Dick' Ford (1924–2015), and James Francis 'Jim' Ford (1927–2001).Ford also had three half-siblings from the second marriage of Leslie King Sr., his biological father: Marjorie King (1921–1993), Leslie Henry King (1923–1976), and Patricia Jane King (1925–1980).