Tywin's illegitimate child with Rhaella Targaryen. The baby was pretended to be a still-born and Tywin passed her off as his illegitimate child to save a big scandal. Maude was legitimized by Robert when she was 10 years old. Maude was told her mother had died giving birth to her, & she was 'low'. Maude grew up beside the Lannister siblings, growing close with Tyrion, didn't care much for the twins. Tywin liked Maude, but Maude had no such compassion.
Maude found her home up north, where she frequently visited as often as she could. Arya became her little sister, Robb and Bran her brothers, Sansa her annoyance & Jon her best friend and eventually her suitor. Tywin was outraged that she was going to marry a bastard & the secret came out. Maude was a Targaryen, the rightful heir to the throne now that she had been legitimized when she was 10. Fearing Cerasi would find out Maude set off to find her half brothers and sisters. Maude found Dany and Viserys with Illaryio. Viserys belived, but Dany did not , though the let her an let her stay with them, Maude stopped Drogo and Dany killing Viserys and Viserys' original plan became a success and Maude was placed on the throne. Dany challenged her for it . Viserys managed to convince Dany to step down , Viserys and Maude had fallen in love. Maude made Tyrion her hand and Viserys and Dany warden of the west and north repectivly. But Jon Snow reappeared and all the old flames reappeared as well. Viserys proposed marriage and Jon challenged him for Maude's hand. Viserys, though unlikely won, he did kill Jon by banging his head against the barriers at the place of the challenge. Viserys and Maude were married, but Maude always held a special place in her heart for Jon.
Maude was succeeded to the throne by her first born Tyrion Targaryen, who ruled with his two sister and brother Arya and Jon as his councilors. Maude was killed by a wound she got while out horse ridding ending her thirty six year regin. Viserys died twenty years later.