As was observed years ago upthread, the Irish Rovers version addressed "Mrs." Durkin.

That's how they sang it on American TV a year earlier.

The show was "Hollywood Talents Scouts Starring Art Linkletter" (CBS-TV), and the date was August 29, 1966. I recall Linkletter (an iconic radio-TV host for decades) introducing their music as the real McCoy (and no, they didn't sing "The Unicorn"). As a big Clancy-Makem fan at the time, I was obviously impressed.

They sang the second line of "Mrs. Durkin" as "the other house besides."

Get it? Get it?