From the Newgate Calendar:
This unhappy gentleman was a divine of the Church of England, and had been very much esteemed for his learning and abilities. Few men were more capable of shining in a church, or had a greater share of that sacred eloquence so requisite in a preacher. He was minister of Stanton-Lacy, in the county of Salop, where he was exceedingly followed and admired till his crimes came to be known, and where he might have been beloved till death in a natural way had taken him hence, and then universally lamented, if his heart had been as well furnished with grace as his head was with knowledge and his tongue with expressions.
A young gentlewoman of a considerable fortune, who had been left an infant by her parents, was committed to his care by her executors, as to a man who, they trusted, would not only deal justly by her, but also instruct her betimes in the principles of religion, and her several duties as a Christian. But, alas! how weak is human nature, and how soon are we tempted aside from the ways of piety! Mr. Foulkes, instead of answering the purpose of the young woman’s friends, was soon smitten with her charms, and took an opportunity of discovering a criminal passion for her, though he had at that time a virtuous wife and two children living. The young lady too easily consented to gratify his lust, and they continued their conversation together till she became pregnant.
All the means he could think of to procure abortion were now tried, and they all proved ineffectual; so that they must be both exposed to scandal, unless she could be removed to some convenient place, remote from the eyes of the world, and from the jealousies of Mrs. Foulkes, where she might be delivered of her burden, which was not yet perceived. A plausible excuse for his going up to London was soon formed, and for his taking Miss along with him, who at that time was under twenty years of age. When they arrived in town they took a lodging in York Buildings in the Strand, where she lay in, and where (shocking to think of!) the child was privately murdered, to prevent the infamy that might follow.
But divine vengeance would not suffer this horrible deed to remain long concealed, for before Mr. Foulkes went out of town the girl was examined upon the suspicion of some women, when she confessed the whole, and charged Mr. Foulkes with the murder, who was thereupon apprehended and committed to Newgate; in a short time after which he was condemned at the sessions house in the Old Bailey, upon the evidence of the young woman. On the 31st of January, 1679, he was executed at Tyburn.