"Nowadays this is probably considered not politically correct "
I don't care if anyone does! I don't!
I didn't dedicate my life to researching this(hymn?). But I did find a reference to it!

http://books.google.ca/books?id=wvd6Q_qv6CwC&pg=PA223&lpg=PA223&dq=What+heroes+thou+has+bred,+O+England,+my+country!&source=bl&o