When Maisie Madigan is drunk at the Boyle's house, she strolls across the kitchen and Mrs. Boyel's arms are by her side, but in the next shot, Mrs. Boyle's arms are crossed.
Maisie Madigan states that June 25, 1903 was a Tuesday. However, it was in actuality a Thursday.
In the shot of Johnny in bed after Maisie Madigan has a drink of whiskey at the Boyle's house, he is shown with both arms.