Oliver Cromwell | Oliver Stone | Oliver! | Oliver Goldsmith | Oliver | Jamie Oliver | Oliver Wendell Holmes, Jr. | Oliver Sacks | Oliver Wendell Holmes, Sr. | Oliver Twist | Oliver Wendell Holmes | Oliver Hardy | Oliver Reed | Oliver North | Oliver Nelson | Oliver Hazard Perry | Oliver Lake | Oliver Heaviside | Oliver O. Howard | Oliver Tambo | Oliver Lodge | Oliver Letwin | Oliver Kahn | Oliver Knussen | Paul Oliver | Oliver Tompsett | Oliver Pocher | Damien Oliver | Susan Oliver | Oliver Dragojević |
Holzapfel has published with other Irish authors, including Oliver Snoddy and John Farrell, and his work has been anthologized in the Penguin Book of Irish Verse and Modern Irish Poets.