Humphrey Leech (1571 – 18 July 1629) was an English priest, originally of the Church of England, who converted to Catholicism.
He was educated at Shrewsbury School, and matriculated at Brasenose College, Oxford, on 13 November 1590 aged 19.
A sermon which he preached concerning precepts and evangelical counsels gave offence to the university, and he was summoned before the pro-vice-chancellor, Leonard Hutten, as anti-Calvinist.
[2] After appealing ineffectually to Richard Bancroft, the Archbishop of Canterbury, Leech went to the College of the English Jesuits at St. Omer, and renounced Protestantism.
After some time at Arras, he entered the English College, Rome in 1609, under the assumed name Henry Eccles.