From Wikipedia, the free encyclopedia. Marianne Koch (born August 19, 1931 in Munich) is a retired German actress of the 1950s and 1960s, best known for her appearances in spaghetti westerns and adventure films of the 1960s. She later worked as a television host and as a physician. Between 1950 and 1971, Koch appeared in more than 65 films. In the haunting 1954 espionage thriller Night People she starred alongside Gregory Peck. Sergio Leone's 1964 production A Fistful of Dollars showcased her ...