Complex sentence: Beard hails from old money, owing much of his wealth and class privilege to a trust fund set up for him by his grandfather, James Jerome Hill, founder of the Great Northern Railroad in the late nineteenth/early twentieth centuries.
Split into simpler sentences: Beard hails from old money, owing much of his wealth and class privilege his grandfathers. Another grandfather, James Jerome Hill, was founder of the Great Northern Railroad in the late nineteenth/early twentieth centuries.