The term "macroeconomics" stems from a similar usage of theterm "macrosystem" by the Norwegian economist Ragnar Frisch in 1933. and there was a long existing effort to understand many of the broad elements of the field. It fused and extended the earlier study of business fluctuations and monetary economics.
Mark Blaug, a notable historian of economic thought, proclaimed in his "Great Economists before Keynes: 1986" that Swedish economist Knut Wicksell “more or less founded modern macroeconomics”.
Sorry, the audio recorded weirder than expected.