Steve,

JBG was at the Mechanics' Institute in November 1861, along with Miss Birchall (Serio-Comic).

In 1875:

"Mr. Sam Torr is nightly appearing with the greatest success at the Mechanics', Hull.
Agent, Charles Roberts.
London, Boxing Night.
New songs in preparation by J.B.Geoghegan, Esq"

Era Magazine, October 31st 1875


Regarding songs:

"Now Ready. J.B.Geoghegan's Song 'Brigham Young'"

Era Magazine, Sept 1870

"NOTICE. Having printed numerous copies of J.B.Geoghegan's song 'Carried her to Belle Vue Jail' without his permission, I hereby make this apology, and agree to give him Two Pounds in consideration that he takes no further proceedings.

(Signed) J.H.Millburn, Comic Vocalist. September 21st, 1865"

Era Magazine, Sept 24th 1865.