I've combined the lyrics from some of the oldest versions I could find by LeMessieurs - collected by Gerald Doyle and James Murphy.
"The Ryans and The Pittmans" is a popular Newfoundland folk song. It tells of the romantic entanglements of a sailor named Bob Pittman, and his desire to sail home to finally marry his "sweet Biddy". The song is also known as "We'll Rant and We'll Roar", after the first line of the chorus.
It was printed in Old Songs of Newfoundland (1912) by James Murphy but it dates back from much earlier than that. The places mentioned in the song are outports in and around Placentia Bay, Newfoundland. The most famous recent version of the song was recorded by Great Big Sea, called "Rant and Roar".
****REVISED/REFORMATTED MARCH 10, 2019 - SR****
A video for this song: