Songs directly addressed to someone non-famous (a friend or lover or half-brother, perhaps) who is named in the song but not in the title

on that note see "Grandma take me home" in Nirvana's "Silver".

Future of the Left "Arming Eritrea" is directed, angrily, to someone named "Rick." I remember it getting hyped on ILM and me being totally baffled as it seemed to be the whiny screechings of a teenaged lout, grounded by his stepdad.