Complex sentence: Born in Philadelphia, Pennsylvania as Paul Douglas Fleischer, he began his career as a stage actor; notably winning both a Theatre World Award and a Clarence Derwent Award in 1946 for his portrayal of Herry Brock in "Born Yesterday".
Split into simpler sentences: Born in Philadelphia, Pennsylvania as Paul Douglas Fleischer, Douglas began his career as a stage actor. In 1946 he won both a Theatre World Award and a Clarence Derwent Award for his portrayal of Herry Brock in "Born Yesterday".