Robert William "Dabbs" Greer (April 2, 1917 – April 28, 2007) was an American actor who performed many diverse supporting roles in film and television for some fifty years.His distinctive, southern-accented voice fitted well in shows featuring rustic characters, such as westerns. He also was portrayed on other shows as a minister, and is probably best remembered as the Reverend Robert Alden in NBC's Little House on the Prairie.