Some other lesser know French songs include:

Ballinaddy,
Celestial Paintings,
Comic Advertisement,
Cremorne,
Cruise of the Pirate Bus,
End of the Holiday,
Excelsior,
Fisherman's Wife,
Fitzwilliam Square,
Galloping Hogan,
George Grossmith,
Goosey, Goosey, Gander
Hiawatha's Motoring,
How Hiawatha Won the Cup,
If I was a Lady,
In Exile,
In the Studio,
Islands of Aran,
Kindly Welcome,
Later On,
L'Envoi,
Lines in a Swiss Hotel,
Lines Written in Praise of Joan Phyllis French [one of his daughters],
Little Girl's Prayer,
Mother's Fairies,
Musician to His Love,
Not Lost but Gone Before,
Nursery Rhymes,
Off to the West Indies,
Only Way Out of It,
Otter King,
Painter and the Pianist,
Paradise,
People I Don't Want to Meet,
Queen's Advice to Lord Zetland,
Queen's After-dinner Speech,
"Reaction",
Red Letter Days,
Retrospection,
Roley, Poley,
Smiles,
Sweet Lavender,
Tell Me, O Captain,
Tennis Tournament,
Things That Matter,
To E.R.
The the West,
Valley of Dunloe.

Coincidentally, I also asked on a recent Percy Thread, if he had ever been recorded. I think the answer is "No'.