Serena Rothschild British racehorse owner (1934–2019) Parents Philip Gordon Dunn Lady Mary St. Clair-Erskine Children Nathaniel Philip Victor James Rothschild, 5th Baron Rothschild Hannah Mary Rothschild Beth Matilda Rothschild Emily Magda Rothschild Siblings Nell Dunn Brigid Dunn Partners Jacob Rothschild, 4th Baron Rothschild