I lie where life should perish fast, Yet in my bounds, green shadows last. A mirror born of desert’s sigh, Where weary feet and camels lie. What am I?

In yon chamber, a keeper of lore, Holds memories of miles, stored. A tarsal’s friend it dost be, Yet it holds not the knee, 'Tis a vessel where loafers are received.

Jack says I'm his, though coat of arms denies. A herculean column reaching towards the skies. The apex in legends, opposing Ceuta. Beware, seamen, 'Non terrae plus ultra.'

My six letter name is shortened from Latin, and us completes my Latin name; all before, we were removed. My origins Welsh by name and fame, with Celtic roots sadly hidden; I tied to a king, with a table like a ring, and of fairness I was often spoken. I was guided by literary figure, with magical fame to my name; though please search my original Welsh name.

I am nothing like my mom or dad - maybe I was altered in the womb. Start with an alternative to he she they, then add a James Bond doctor. Next the creator of Star Trek if you knew him well, finish with the opposite of bro, or maybe not so different.