During this period, the affluent, contiguous districts of Fort Greene and Clinton Hill (then characterized collectively as The Hill) were home to such notable figures as Astral Oil Works founder Charles Pratt and his children, including local civic leader Charles Millard Pratt; Theosophical Society co-founder William Quan Judge; and Pfizer co-founders Charles Pfizer and Charles F. Erhart. Brooklyn Heights remained one of the New York metropolitan area's most august patrician redoubts into the early 20th century under the aegis of such figures as abolitionist clergyman Henry Ward Beecher, Congregationalist theologians Lyman Abbott and Newell Dwight Hillis (who followed Beecher as the second and third pastors of Plymouth Church, respectively), financier John Jay Pierrepont (a grandson of founding Heights resident Hezekiah Pierrepont), banker/art collector David Leavitt, educator/politician Seth Low, merchant/banker Horace Brigham Claflin, attorney William Cary Sanger (who served for two years as United States Assistant Secretary of War under Presidents William McKinley and Theodore Roosevelt) and publisher Alfred Smith Barnes. Contiguous to the Heights, the less exclusive South Brooklyn was home to longtime civic leader James S. T. Stranahan, who became known (often derisively) as the "Baron Haussmann of Brooklyn" for championing Prospect Park and other public works.