Blackstone, 1765:
“The children of aliens, born here in England, are, generally speaking, natural-born subjects, and entitled to all the privileges of such.”
http://press-pubs.uchicago.edu/founders/documents/a1_8_4_citizenships1.html
I think I’ll trust his opinion of British law instead of yours...
I'm not posting my opinion. I'm posting the ACTUAL English law:
"To place the Children, born within this Realm, of foreign Parents, in Degree for the first Birth or Descent only, as Aliens made Denizens, and not otherwise."
http://www.british-history.ac.uk/report.aspx?compid=8318