Lady Lucia St Clair-Erskine born 1993; child of Peter St Clair-Erskine, 7th Earl of Rosslyn, and Helen Watters (b. 1993) Parents Peter St Clair-Erskine, 7th Earl of Rosslyn Helen Watters Children Siblings Harry St Clair-Erskine Alice St Clair Jamie St Clair-Erskine, Lord Loughborough