Owing to the death of his father, George Swinnock, jun., was brought up in the house of his uncle Robert, a zealous puritan.
in 1647–8, and then proceeded to Oxford to obtain preferment, entering as a commoner at Magdalen Hall.
In 1655 he was appointed to St. Leonard's chapel at Aston Clinton in Buckinghamshire, and on 10 January 1661 was presented to the vicarage of Great Kimble in the same county by Richard Hampden, to whom he was then chaplain.
Upon the issue of the Declaration of Indulgence in 1672 he retired to Maidstone, where he became pastor to a large congregation.
This five volume set of Swinnock's works is now made available by Banner of Truth Trust.