有 is a hand (又) holding a piece of meat (月, the 'meat' radical). In ancient times, to have meat in your hand was to HAVE — to possess something valuable. Wealth you could literally grasp.
有 is one of the most-used verbs in Chinese: 有 (to have / there is), 没有 (to not have — its only negation; you can't say 不有). 有人 = 'someone / there is a person'. 有名 (which you just learned) = 'to have a name' = famous. It also expresses existence: 这里有水 = 'there is water here.'
A hand (又) gripping meat (月) — to HAVE something valuable.
有 is the one verb you negate with 没, never 不: 没有 (don't have). Every other verb takes 不 — 有 is the lone exception, and Chinese learners never forget it.