Lady Agnes Sinclair Peerage person ID=29878 (1539–1619) Parents George Sinclair, 4th Earl of Caithness Lady Elizabeth Graham Children William Hay of Fetterletter George Hay, 1st of Kellour Siblings William Sinclair of Mey unknown daughter Sinclair unknown Sinclair Lady Margaret Sinclair John Sinclair, Master of Caithness Lady Barbara Sinclair George Sinclair of Mey David Sinclair Partners Alexander Gordon of Strathdon Andrew Hay, 8th Earl of Erroll