Historical clue formulations

• Rey, to Luke Skywalker — 2021-09-12
• Disciple — 2021-01-24
• Marco Rubio, to Jeb Bush, once — 2016-04-21
• Mentored one — 2015-01-11
• Tutee — 2009-09-07
• Mentor's companion — 2006-01-14
• One being brought along — 2005-12-02
• Junior partner, maybe — 2001-12-16