That was Pius XII.
Pius IX, the longest reigning Pope in history, absconded with and "adopted" a young Jewish boy, forcing him into Catholic conversion.
He is also being considered seriously for sainthood.
Yeah, my bad.
I don't think that the RCC should make that exemplary behavior by sainting Pius IX.
Unless his action is condemned, the cannonization of Pius IX would be disastrous to Catholic-Jewish relations.
It would do the same, if not more damage, than the opposition by some leftists and leftist Jews to Pius XII is doing.