Stallworthy was born in London. His parents, Sir John Stallworthy and Margaret Stallworthy, were from New Zealand and moved to England in 1934. Stallworthy started writing poems when he was only seven years old. He was educated at the Dragon School, Rugby School and at Magdalen College, Oxford, where he won the Newdigate prize. His work include seven volumes of poetry, and biographies of Wilfred Owen and Louis MacNeice. He has edited several anthologies and is particularly known for his work on war poetry. While researching the localhistory of New Zealand Stallworthy discovered an obscure volume entitled Early Northern Wairoa written by his great-grandfather, John Stallworthy, in 1916. From this book he learned that his great-great-grandfather, George Stallworthy, had left his birthplace of Preston Bissett in Buckinghamshire, England, for the Marquesas as a missionary. This discovery led in turn to him finding family-related letters in the archives of the London Missionary Society. Stallworthy's book A Familiar Tree is a collection of poetry inspired by events depicted in these documents. Singing School is an autobiography which emphasises Stallworthy's development as a poet. Stallworthy wrote a short summary of war poetry in the introductory chapter to the Oxford Book of War Poetry, as well as editing several anthologies of war poetry and writing a biography of Wilfred Owen. In 2010 he received the Wilfred Owen Poetry Award from the Wilfred Owen Association. In the course of his literary career, he became a Fellow of the Royal Society of Literature and the British Academy.
Published works
The Astronomy of Love, by Jon Stallworthy.
Out of Bounds, by Jon Stallworthy.
Between the Lines: W. B. Yeats's Poetry in the Making, by Jon Stallworthy.
Yeats: Last Poems, a Casebook, by Jon Stallworthy.
Root and Branch, by Jon Stallworthy.
Positives, by Jon Stallworthy.
Vision and Revision in Yeats's Last Poems, by Jon Stallworthy.
Five Centuries of Polish Poetry, 1450–1970, by Jerzy Peterkiewicz and Burns Singer; 2nd edition with new poems translated in collaboration with Jon Stallworthy.
The Twelve, and Other Poems, by Alexander Blok; translated from Russian by Jon Stallworthy and Peter France.
Singing School: The Making of a Poet, by Jon Stallworthy.
The Norton Anthology of English Literature: Volume 2C, The Twentieth Century, edited by Jon Stallworthy; M. H. Abrams, general editor; Stephen Greenblatt, associate editor.
Great Poets of World War I: poetry from the great war, by Jon Stallworthy.