Chester County's notable people and groups include Native Indians, the Lenni Lenape, founding settlers who were English, Welsh, Quakers, Scotch-Irish, and Germans, George Washington as Commander in Chief, Marquis de LaFayette in the Battle of the Brandywine, Anthony Wayne at the encampment at Valley Forge, William Darlington as a physician, scientist, and banker, Bayard Taylor as an author and diplomat, Thomas McKean as a patriot, jurist, and governor, Rebecca Lukens as a woman iron master, Smedley D. Butler as Major General USMC, Mark Sullivan as a columnist and author, Herb Pennock as a pitcher and manager, and George Morris Philips as an educator and scholar.