Complex sentence: The House of Windsor replaced the British branch of the German House of Saxe-Coburg and Gotha Even without these changes, however, Lord Frederick would still have been born with an English name, as "HRH Prince Frederick of Kent".
Split into simpler sentences: The House of Windsor replaced the British branch of the German House of Saxe-Coburg and Gotha. Nonetheless, even without these changes, Lord Frederick would still have been born with an English surname, as "HH Prince Frederick of Kent".