There are some interesting details about Arthur and Louise's courtship in Noble Frankland's biography, although Frankland is particularly irritating in paraphrasing in his own text the gist of Arthur's letters to Louise (and to others) rather than quoting verbatim. He is also rather opaque on Arthur's relationship with Leonie Leslie although he doesn't airbrush it out of the picture. Another interesting point is that he suggests (without any real supporting evidence) that Thyra would have been happy to receive a proposal from Arthur.