You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
Plymouth

Context:
Local chemist William Cookworthy established his somewhat short-lived Plymouth Porcelain venture in 1768 to exploit the recently discovered deposits of local China Clay - an industry which continues to make up a portion of the city income. As an associate and host of engineer John Smeaton he was indirectly involved with the development of the Eddystone Lighthouse.

Question:
Who founded Plymouth Porcelain?

William Cookworthy