A pioneer is generally a man who has outlived his credit or fortune in the cultivated parts.
Source: In The New Webster's Dictionary of Quotations and Famous Phrases, by Donald Bolander, 1987.
-- Benjamin Rush, (Jan 4 1746-1813), US physician, congressman; He was the most famous doctor of his time; signer of the Declaration of Independence, 1776; Surgeon General of the Continental Army, 1777-1778.