April 4 - June 3, 1755
Jeremiah Hammerick served as a chain carrier for two surveys including approximately 1700 acres in the Goose Creek, Little River, Hungry Run area, about 20-25 miles northwest of the home properties. (The survey crew’s pilot was John Sias, Benjamin’s father-in-law.) ("Northern Neck Land Grant Warrants and Surveys," Virginia State Archives, Richmond, VA.)
Jeremiah was either Patrick's seventh son or one of his oldest grandchildren. Since chain carriers had to be duly sworn, (William Waller Hening. Hening’s Statutes At Large, Vol VI, 1748 - 1755. Charlottsville, VA: University Press of Virginia, 1969. p. 36.) Jeremiah was not a youngster when this survey was conducted. Most likely, he was at least 18 years old, which means he was born in 1737 or before. Since he was not listed as a tithable in 1747, (REF: 1747) he must have been no older than 15 at that time, meaning he was born in 1732 or later. Although Jeremiah could have been living away from home by that time like John (REF: 1751) and Joseph, (REF: June 25, 1753 comments) there are no records that establish an age for him that supports being old enough to be away from home such as there are for them. Children almost always lived with their parents until they were married or business pursuits drew them away from home when they were of age. (Albert Alan Rogers. Family Life in Eighteenth Century Virginia. Charlottesville, VA: University of Virginia, 1939. p. 273 & 287. AND Edmund S. Morgan. Virginians At Home: Family Life in the Eighteenth Century. Williamsburg, VA: The Colonial Williamsburg Foundation, 1952. p. 26.) Since Jeremiah was born by 1737, his father could have been born as late as 1715. This means that besides Patrick, son Patrick, Jr., James, Robert, or John could feasibly have been Jeremiah's father. (REF: 1711 chart)
It is apparent that Robert was not his father because, if he had been, Jeremiah (as the oldest son), would have inherited Robert's property upon his death and, therefore, would have been named on the deed when Robert's property was sold in 1770. (REF: 1747 comments) It is also apparent that Jeremiah did not inherit the parcel owned by James after James died and, therefore, was probably not his son. (The ultimate disposition of James' land is an enigma. Extensive research has not yet resulted in discovery of a deed transferring the property to anyone, either during or after James' lifetime. However, if Jeremiah had been James' son, he would certainly have become owner after James' death.) Patrick, Jr. sold his parcel himself in 1770, (REF: September 6 & 7, 1770) so association via inheritance of his property is not possible. In fact, there is no apparent information to firmly associate or firmly disassociate Jeremiah with Patrick, Jr. Likewise, Jeremiah cannot be associated or disassociated with John. Therefore, it is possible that Jeremiah could have been the son of either Patrick, Jr. or John. If he was, he was certainly one of Patrick's oldest grandchildren. One further point to consider is that Patrick, Jr. was apparently a surveyor. (REF: November 26, 1753) Perhaps Jeremiah was following in his father's footsteps.
It is also possible, however, that Jeremiah was a direct offspring of Patrick's. In 1737 (the latest date for Jeremiah's birth), Patrick would have been 53 years old and Margaret would have been between 44 and 47 years old. (REF: 1711 chart) These ages are certainly not beyond the biological possibilities for having children. In fact, during eighteenth century America, it was not at all unusual for couples in that age bracket to still be having children. (Rogers. pp. 262 & 265.) Therefore, it is entirely possible that Jeremiah could have been Patrick's youngest son.