09:5009:50, 23 May 2024diffhist−544
William III of England
As I suspected, she did not write that. See https://archive.org/details/williamoforangep0002robb/page/266/mode/2up?q=Je+Maintiendrai. Nor does she mention or show the arms.
09:3509:35, 23 May 2024diffhist+33
William III of England
It's basically the same unimproved text. Repeating the same phrase "Prince of Orange" four times in one sentence is bad writing by any standards.