I thought it would be nice to know something about UK copyright. The site for the copyright service of the United Kingdom says:


6.Duration of copyright
The 1988 Copyright, Designs and Patents Act states the duration of copyright as;

i.For literary, dramatic, musical or artistic works
70 years from the end of the calendar year in which the last remaining author of the work dies.

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Since Nora Hopper died in 1906, the words became public domain at the end of 1976. The tune is said to be traditional, so that's no problem.

Some performer may have copyrighted a recording of this song, but since no recording is here, they have no right to complain. Somebody was probably jumping to conclusions.