Complex sentence: Their son Charles Henry Gurney (1833--1899) graduated from Trinity College, Cambridge, married a daughter of Henry Thoby Prinsep, and later became a partner in Saunderson's Bank, London.
Split into simpler sentences: Their son Charles Henry Gurney (1833--1899) went up to Trinity College, Cambridge, graduated, and married a daughter of Henry Thoby Prinsep. Later he became a partner in Saunderson's Bank, London.