Some "lighthouse keeper" songs:

I Want to Marry a Lighthouse Keeper [lyrics] by Ericka Eigen (from the film Clockwise Orange) [updated link]

My Father was a Lighthouse Keeper [lyrics] by Malcolm Le Maistre [updated link]

So Said the Lighthouse Keeper [lyrics] (John Woloschuk)

The Lighthouse Keeper by Billy Bennett [this seems to be a poem] [updated link]

Lighthouse Keeper by Mark J. Bradlyn, [title only]