how do i find out my deceseased uncle's rank amnd membership in the Order of DeMolay (columbus,georgia i think) ?

THANK YOU in advance for help in this!

i'm trying to find out where and what rank in DeMolay my deceased uncle attained...i have a few of his pins and i know he was a "Beau" to the Rainbow girls that my mother was a (Faith?) ranking member of....

how do I find out about my mother's Rainbow Girls membership from years past or possibly still current status and my Grandmother's supposed membership in Eastern Star ?

(how do i find out if my Grandmother was in the Eastern Star like she told me she was? my mother the Rainbow Girls ex Faith? member denies grandmother's membership of Easter Star although grandmother told me plainly that she was indeed OES.)

grandmother was married to a 33 degree Freemason of the Blue Lodge and her daughter was Rainbow Girls Faith level and her son was a DeMolay Beau. Grandmother told me about her cousin also in Eastern Star. our family cemeteries and burial grounds are chock-full of Masonic and Easter Star, Demolary and Rainbow Girl tombstone symbols, inverted stars, obelisks, globes, columns,etc. also Oddfellows and Woodsmen and others. )