Plant story-- Holly, holy and Hollywood, a Holly Postscript

In researching English (or European) holly Ilex aquifolium (holly family, Aquifoliaceae) I generated questions and here are the answers to two that puzzled me:
1) Is the word holly derived from holy?
and
2) Is Hollywood, California named for a grove of European holly trees?

Plant Story -- Holly (Ilex aquifolium) Celebrating the Solstice--and Christmas--for Millennia

European holly, Ilex aquifolium

We sing "Deck the halls with boughs of holly" at Christmastime, often without thinking about what we are saying. 

I live in an area where the traditional holly cannot grow, and yet everyone knows what holly looks like.

Why?