Apparently Stonyfell is a winery and Metala is a vineyard, not the other way around: https://www.therealreview.com/2022/04/25/the-adams-family-bring-metala-home/
Hey CJ! Both of these producers share a long and intertwined history together. That being said, the current text conflates the two producers. and the 1890 date refers to the first plantings of Metala, that were trucked over to Adelaide Hills' Stonyfell for the first couple of vintages. The text is updated to feature the planting of Metala. Thanks!