Was Isaac Newton poor or rich?

Isaac newton was born into a prosperous farming family. He attended the village school until the age of about 12, then boarded at King's School, Grantham - and then studied at the University of Cambridge ... He later became a Professor of Mathematics at Cambridge, and later in life he was Warden (later Master) of the Royal Mint, and had the task of overseeing the recoinage of the currency from 1696 onwards. Later, he moved the pound over to the gold standard. All these were highly responsible jobs and well paid. It seems that he was prosperous but neither really rich and certainly not poor.