[1] James Cassidy attended St. Charles College in Ellicott City, Maryland, and St. Mary's Seminary in Baltimore.
[3] He received his episcopal consecration on May 27, 1930, from Archbishop Pietro Biondi, with Bishops Joseph John Rice and George Guertin serving as co-consecrators, at St. Mary's Cathedral.
[3] During his 17-year tenure, Cassidy earned a reputation as a strong supporter of the Temperance movement against alcohol consumption and of the rights of workingmen.
He stated that Hays was being "false to the trust imposed on him" and called him "a co-betrayer of with the movie industry of the sacred rights of parents to protection of the morals of their children.
[6] In January 1951, Cassidy published a pastoral letter forbidding girls cheerleading at Catholic high schools in the diocese, citing the indecency of their outfits.