Chronicle of the Yerkes Family: With Notes on the Leech and Rutter Families by Josiah Granville Leach, J. B. Lippincott, 1904
Josiah Yerkes (Herman2, Anthony1), fourth child and third son of Herman Yerkes by his wife Elizabeth Watts, was born in the Manor of Moreland, Montgomery (formerly Philadelphia) County, Pennsylvania, 28 November, 1718; died there, in September, 1793.
He was a farmer, and resided on a farm given to him by his father, in Moreland, on the Pennypack Creek, above the mills of his brother Silas. On 22 July, 1747, he mortgaged his land, consisting of eighty-four acres, to Joseph Spangenburg. His wife Mary joined him in this mortgage; also in a mortgage of the same land, given to George Sharswood, of Philadelphia, 16 April, 1765, to secure the payment of £200; and in a deed dated n February, 1755, by which he conveyed certain lands to his brother, Stephen Yerkes.
The date of his marriage or the maiden name of his wife is not certainly known, although it is probable that the name was Walton, as Nathaniel Walton, of Moreland, in his will, dated 6 February, 1777, names "my sister Mary Yerkes." Mr. Yerkes no doubt survived his wife, as she is not named in his will. This instrument, dated 2 December, 1791, proved 1 October, 1793, describes him as "of the Manor of Moreland," and names son Joshua, son Josiah, daughter Rebecca Wood, granddaughter Sarah Boore, daughter Margary, daughter Mary, and son Nathaniel, the latter being named as executor, and the devisee of his plantation, which at that time consisted of one hundred acres.
Children of Josiah and Mary Yerkes; born in the Manor of Moreland:
37. Joshua Yerkes.
38. Josiah Yerkes, married Rachel Edwards, nee Brooks.
39. Rebecca Yerkes, living at the date of her father's will; married, 30 January, 1765,Thomas Wood.
40. Sarah Yerkes, married, in May, 1774, Thomas Bower, of Moreland. The marriage was performed by the Reverend John Blackwell, as appears from the records of the Southampton Baptist Church. In the marriage license, dated 20 April, 1774, and printed in Pennsylvania Archives, second series, ii. 322, the name is spelled " Bower," while Josiah Yerkes, in his will, named his " granddaughter Sarah Boore," probably a misspelling of Bower. Such granddaughter is thought to have been the only issue of Sarah Yerkes.
41. Margery Yerkes, died circa 1835; married Peter Saurman.
42. Mary Yerkes.
43. Nathaniel Yerkes, born 9 August, 1763; died 5 June, 1831; married Sarah Johnson.