It was not until 1787 that Catherine may have in fact decided to exclude her son from succession. After Alexander and his brother Constantine were born, she had them placed under her charge, just as Elizabeth had done with Paul. That Catherine grew to favour Alexander as sovereign of Russia rather than Paul is unsurprising. She met secretly with Alexander's tutor de La Harpe to discuss his pupil's ascension, and attempted to convince Alexander's mother Maria to sign a proposal authorizing her son's legitimacy. Both efforts proved fruitless, and though Alexander agreed to his grandmother's wishes, he remained respectful of his father's position as immediate successor to the Russian throne.