Answer: There are actually quite a few large-leafed ceanothus and they vary inflower color so I'm not sure which one you're looking for. Here's a web address with names and photos of Ceanothus arboreus cultivars: http://www.elnativogrowers.com/Ceaguide.htm
Why not visit the site and see if you can find a duplicate shrub? By the way, Ceanothus generally doesn't live quite as long as yours has. You must be keeping it very happy with all your good care!
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