The song includes the refrain "Jerusalem, Jerusalem!". He wrote the song "Danny Boy" while living in Bath in 1910, but it did not meet with much success. In 1912 his sister-in-law in America sent him an old Irish tune called "Londonderry Air", which he had never heard before. The tune matched his lyrics almost perfectly. He published the now-famous song in 1913. His ballad "Roses of Picardy", written in 1916 and set to music by Haydn Wood, was one of the most famous songs from World War I. Of his huge output of songs, Weatherly listed a selection of 61 titles in his "Who's Who" entry. In addition to the above, they were: "Nancy Lee"; "The Midshipmite"; "Polly"; "They all love Jack"; "Jack's Yarn"; "The Old Brigade"; "The Deathless Army"; "To the Front"; "John Bull"; "Darby and Joan"; "When We are Old and Grey"; "Auntie"; "The Chimney Corner"; "The Children's Home"; "The Old Maids of Lee"; "The Men of Ware"; "The Devoted Apple"; "To-morrow will be Friday"; "Douglas Gordon"; "Sleeping Tide"; "The Star of Bethlehem"; "Beauty's Eyes"; "In Sweet September"; "Bid me Good-bye"; "The Last Watch"; "London Bridge"; "The King's Highway"; "Go to Sea"; "Veteran's Song"; "Up from Somerset"; "Beyond the Dawn"; "Nirvana"; "Mifanwy"; "Sergeant of the Line"; "Stone-cracker John"; "Ailsa Mine"; "Old Black Mare"; "Coolan Dhu"; "Three for Jack"; "Bhoy I Love"; "The Blue Dragoons"; "At Santa Barbara"; "The Grenadier"; "Reuben Ranzo"; "Dinder Courtship"; "Friend o'Mine"; "When You Come Home"; "Little Road Home"; "Greenhills of Somerset"; "Danny Boy"; "As you pass by"; "Ships of my dreams"; "Why shouldn't I?"; "When Noah Went-a-sailing"; "Time to go"; "Chumleigh Fair"; "Our Little Home"; "The Bristol Pageant, Music Composed by Hubert Hunt in 1924" and "Little Lady of the Moon". Weatherly's prose publications include "Wilton School", (1872); "The Rudiments of Logic, Inductive and Deductive", (1879); "Oxford Days: or How Ross got his Degree", (1879); "Questions in Logic, Progressive and General", (1883) and "Musical and Dramatic Copyright" (1890), with Edward Cutler.