Yeah, unfortunately their hard living ways have decimated a lot of bands from that genre/era. He was the last original member left in the band. RIP Mr. Hlubeck.
Gregg laid to rest near his brother Duane Allman and band mate Berry Oakley.
http://www.rollingstone.com/music/news/gregg-allman-laid-to-rest-at-macon-funeral-w485721