I’ve always been intrigued by astro-twins. The similarities as well as the differences in their lives are often striking. So I searched Astrodatabank for Donald Trump’s birthdate – June 14, 1946 – and found a close match. 
J. Paul Getty’s youngest son, Timothy Getty, was born on June 14, 1946 at 9:00 AM in Los Angeles, California, with a Leo Ascendant like Trump. (As a matter of fact, his chart is quite close to the 9:51 alternate chart for Trump that’s been floated recently.) Timmy’s Sun and Moon are actually a little later than Donald’s due to the three-hour time zone difference in their births.
The founder of Getty Oil, J. Paul Getty was known as the richest American in 1957 and was worth an estimated $2 billion at his death in 1976 (see Wikipedia for more). Timothy was J. Paul’s only child by his fifth wife, Louise.
At the age of nine, Timothy developed a brain tumor that damaged his sight, and had successful surgery. But the tumor returned a few years later, his head became misshapen, and he had three operations in August of 1958 (at around age twelve) to “reset his skull” according to Astrodatabank. Timothy died under anesthesia on August 17, 1958.
On the other side of the country, is astro-twin Donald Trump also had an unusually wealthy father and an indulged lifestyle. He also came from a family with five children (though they had the same mother, quite different from Getty’s five wives). Donald was athletic and at times belligerent, with some behavior problems at school, describing himself as a “wise guy.”
His father sent him to a military academy when he was thirteen. So it appears that Trump also had a decisive year at twelve, sometime between his Jupiter return and Saturn’s opposition to its natal place. Trump continues to be extremely vital and successful nearly 60 years after his astro-twin passed. 
Timmy had Saturn conjunct Venus in his 12th house, with Saturn ruling the 6th and Venus ruling the 10th. These placements seem to be what cut his life short as they may suggest health issues. Yet despite the vitality of his 1st house Mars, it co-rules the end-of-life 4th house and comes right to him (the 1st). And the lunar eclipse with Uranus at birth can bring sudden reversals in life. Of course, this is easily interpreted after the fact. We may have noticed the potential for health problems, but we certainly wouldn’t have imagined an early death. Still, the two Ascendants were probably about 15° different, moving Venus and Saturn from the 12th to the 11th, where they sextile the MC in Trump’s chart.
Astro-twins show us astrology’s strengths but also its limitations. Despite a few eerie similarities between Timothy Getty and Donald Trump, the two had different souls, life paths and destinies. And there are many others who were born on this date. One of them is Thomas F. “Mark” McClarty, a businessman and long-time friend of Bill Clinton who served as Clinton’s Chief of Staff in 1993-94! (No birth time available.)
This data is rated AA, from birth records, on Astrodatabank.