Constantine was NOT the first pontiff.
There were many before him as it is a PAGAN religious titleNo he was not the first pontiff.
shalom b'SHEM Yah'shua HaMashiach Adonai
from Rome and earlier from Ephesus
and earlier from Babylon.
No, it’s just a term derived from the Latin generic word for “priest,” which is “pontifex.” The priests of the Temple in Jerusalem could legitimately referred to as “pontiffs” in a generic sense as well.