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The Pop III stars I mentioned formed even before most of the globs. They were the very first stars to form out of the gases that went into making up the galaxies. They most likely formed in dense clusters of stars buried within small protogalaxies at the very earliest stages of the formation of large galaxies like our own, even before. The black holes and other relics in globs are pretty much from Pop II stars. No glob ever found is that devoid of metals that its stars could be classed as Pop III. Pop III stars have essentially 0% metals....maybe 1 lithium or beryllium atom per 100 trillion H/He atoms at the very most.
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