There were two John Haglers who obtained land in NC in 1765 and they lived (as the crow flies) only about 20 miles apart at that time. I descend from the one whose land was in what was Mecklenburg that became Cabarrus County in 1792.
The other John`s land was in the forks (west side of the Yadkin and north side of Rocky River in what was Anson that became Montgomery that`s now Stanly County. Because of fevers which was then associated with BAD WATER this John relocated to the foothills in what was Wilkes that`s now Caldwell County, NC.
I don`t know how anyone can say for sure which Johannes (John) was from where. The disembarcation records at Charleston were destroyed by Sherman`s Army during the War Between The States but I`m certain that my ol` John came in thru that port which was the second largest here in America in the mid 1700`s. I know he obtained land in South Carolina in 1749.
Descendants of the other John claim their ancestor came in thru what`s now New York.
I live in Raleigh, NC and my e-mail address is: firstname.lastname@example.org I expect I can help you if you are of a mind to contact me direct.