unknown son Petty-FitzMaurice (born 1853) (b. 1853) Parents Henry Petty-Fitzmaurice, 4th Marquess of Lansdowne Emily Petty-Fitzmaurice, Marchioness of Lansdowne Children Siblings Edmond Fitzmaurice, 1st Baron Fitzmaurice Henry Petty-Fitzmaurice, 5th Marquess of Lansdowne Lady Emily FitzMaurice