What is the meaning of Père?

A priest of the Roman Catholic Church, especially a French one. Also used as a title preceding the name of such a priest.

Sr. - Used after a proper name that is common to a father and his son to indicate that the father is being referred to rather than the son (junior, fils).

father (parent)

father (clergyman)

Sr. (postnominal title used to indicate a father that shares the same name as the son)

father

pear

Source: wiktionary.org