Possible Clues:

• On Wren moved to find fame
• Celebrity currently engaged in opening? Not entirely
• Celebrity; the name of several Royal Navy battleships
• Climbing, some men won erstwhile distinction
• Emerging from somewhere, now noted celebrity
• In retrospect some boffin won erudite fame
• Wide fame
• Note about part of speech you heard
• Fame that stretches far and wide
• Fame in future? Now none