For all you music theorists out there: I am not a professional musician but I occasionally plunk around a little on the guitar. As I don't know what I am doing, I stumble onto chord fingerings I have never been able to find in chord books. What might be the name of this chord: from 1st string to 5th string the notes are, F#, D, G (that is, open third string played), another F#, C.

Another one I recently came across in a blues-based song, a barre chord played at the 7th fret but naturally could be played as a barre chord anywhere on the neck: bar across all six strings with the only noted string being the 2nd string at the eighth fret (G).

Any help/comments/observations/words of wisdom/enlightenment would be greatly appreciated.