Can we draw the following hypothesis from the context?

Context:

Jonathan Williams (March 8, 1929 March 16, 2008) was an American poet, publisher, essayist, and photographer. He is known as the founder of "The Jargon Society", which has published poetry, experimental fiction, photography, and folk art since 1951.

Hypothesis: Jonathan Williams was born in California on March 8th, 1929
It's impossible to say