Factual error: The view of the Golden Gate Bridge from the Drayton's terrace is not in San Francisco, but from the Marin side of the bridge.
Factual error: When Miriam is pacing, waiting for Tony to come home, she is listening to Tony singing "Come Live with Me" on a reel-to-reel tape recorder, but the recorder has no speakers, either built-in or separate.
Factual error: The movie is set in 1922, but the women's clothes are more along the line of 1928, with a strong 1960's influence. For an accurate depiction of 1922 fashion, refer to Season 4 of Downton Abbey.
Factual error: During the Jousting all the knights fail to use their lances correctly by putting them across the horse's neck, instead they just attack each other on the lance arm.