Margaretta Foster, 1st Viscountess Ferrard Irish politician (c.1737–1824) (1737–1824) Parents Thomas Burgh Anne Downes Children John Foster Thomas Skeffington, 2nd Viscount Ferrard Anne Dorothea Foster Siblings William de Burgh Catherine Burgh Dorothea Burgh Maria Burgh Thomas Burgh Anne Burgh Robert Burgh Partners John Foster, 1st Baron Oriel