One of the babies being baptized is named James Michael Corleone. Michael Corleone is the name of the godfather in the popular book and movie series.
Actress Sally Hightower plays the girl that dances with Richie. She's credited as playing "Mary Lou" but that name isn't used in the episode.
Although this is the first appearance of Alfred's twin brother Father Anthony on Happy Days, Al Molinaro first appeared in Laverne & Shirley as the character in "Falter at the Alter" (Season 1 Episode 5) prior to his first appearance as Alfred on Happy Days. This episode serves to provide an explanation for why Al and Anthony look the identical.