So, I was sent various information about characters in the Lorebook. I’ll type them up here, beginning with Alisaie! Since the twins also have information on their books, I’ll put the book info for their parts right below them. There is a 3.4 spoiler in Alisaie’s book information btw.
Alisaie is Alphinaud’s twin sister - though she dislikes that their similarity leads people to mistake her for her brother. Though unmistakably a prodigy, she has, in their sixteen years together, always trailed ever so slightly behind him. Her grandfather, however, never treated her as secondary, and as such Alisaie clearly misses Louisoix dearly, still holding him in higher regard than any other. She travelled to Eorzea to learn the truth of his death and there endured many a trial in her pursuit of finality.
Alisaie prefers action to speech, and unlike Alphinaud, would rather cut to the heart of the matter than engage in endless debate. Some have even said that her aversion to diplomacy renders her the opposite of her brother in that her aversion to diplomacy renders her the opposite of her brother in all but appearance. Though her dignitary parents endeavored to censure this candor, Louisoix appears to have understood its value.
Alisaie enjoys swimming and swordplay, as she can best Alphinaud at both. Ginger cookies claim a spot atop her guilty pleasures, particularly when they are cut and baked in different shapes.
The second of Louisoix’s grimoires, Alisaie does not use it to invoke a Carbuncle, but rather summons a gleaming aetherial sword from its pages - a feat learned through her long travels, and not easily mimicked.
Son of House Leveilleur, it was at the tender age of eleven that Alphinaud and his twin sister, Alisaie, were accepted into the prestigious Studium. There he specialized in the study of arcane entities, history and natural history, and pursued advanced studies in the magical arts and aetherology. Upon graduating at sixteen, the Sharlayan age of adulthood, he resolved to sail for Eorzea in spite of his father’s objections. Alphinaud has since worked to see his grandfather’s wishes made reality. It is why he joined the Scions, and later why he founded the Crystal Braves. With the latter, however, the Ul’dahn elite utilized Alphinaud’s inflated confidence to their advantage, wresting the Braves from his control and delivering the young man a bitter defeat. This defeat, however, would set him upon a journey deep into the heart of the Dragonsong War, where his experiences and encounters would see him grown and mature as a person.
To say Alphinaud is a man of many talents is an understatement. In addition to his scholastic feats, he is also a talented artist, his specialty being portraits. One will not, however, see him taking up his brush and pallet for Krile Baldesion - a young woman for which he bears some annoyance due to her peculiar tendency to know too much.
Adelphoi (Alphi’s entry):
Alphinaud’s grimoire is one of a set Louisoix crafted for his grandchildren. Alone, it enables an arcanist to channel his magicks with ease, allowing for complex incantations. When wielded in tandem with Alisaie’s grimoire, however, new arcane geometries appear, and its true power is made manifest.
Likely the greatest mage of his day, Louisoix Leveilleur was a Sharlayan Archon who was well versed in ancient prophecies. It is also said he delighted in tinkering with magicked items, and that his partiality to decadent sweets such as marron glace did not dim once in his seventy and two years.
Louisoix is perhaps best known for his defiance of the Sharlayan Forum’s stance on the avoidance of war. He established the Circle of Knowing with twelve Archons for a simple goal: to save who could be saved. He stood at the van of the united forces of the Eorzean Alliance of Carteneau, and invoked the might of the Twelve as Dalamud came crashing down from the skies. Yet it seemed this was not enough and in his last moments he prayed that the realm be saved. Through his desperate wish, he was transformed into the immortal Phoenix, and so defeated Bahamut’s earthly form. It is thought, however, that as the Elezen relinquished his hold on his power, the elder primal ensnared his essence and enslaved his spirit.
An eccentric woman of the Midlander clan, Matoya’s age is unknown and woe betide any who ask. Though her obstinacy is the stuff of legend - as many who meet well know - she is nonetheless a prominent and brilliant Archon, and is marked as such by a tattoo on her left cheek. She is also in possession of an ancient Crystal of Light known as the Crystal Eye, a relic that allows one to peer deeply into the aether.
Matoya has long studied the world from the perspective of aether, and her pupil, Y’shtola, continues on in the spirit of this research. Matoya will neither depend upon nor curry favor with anyone, as she firmly believes one must see the world as it is to understand its mysteries. She does have her pride, however, and this sometimes leads her to give harsh tongue-lashings to her pupils. Indeed, the day she begins to remember her students fondly will be the day that her work ends.
Matoya also has an interest in herbal infusions, and drinks copious amounts of the stuff - sometimes upwards of seven cups a day.
It is also worth noting that Fourchenault is the one that called for the great Exodus from the colony to the Motherland.
thanks to @treasurehuntah for all of this information since I do not have the book itself!