Roger Heman Sr. (February 27, 1898 – March 14, 1969) was an American sound engineer. He won an Academy Award for Best Special Effects and was nominated for four more in the same category. He worked on more than 350 films during his career. His son was also a sound engineer.
Roger Heman Sr. had a son named Richard.
Since his name is Roger Heman Sr., his son's name has to be Roger Heman Jr. so it is definitely incorrect that his son's name is Richard. The system probably tripped on the semantics of Sr. and Jr. in names.