William Houstoun-Boswall-Preston (1849-1885) (1849–1885) Parents Sir George Houstoun-Boswall of Blackadder, 2nd Bt. Euphemia Boswall Children Siblings Alfred Houstoun-Boswall Robert Houstoun-Boswall-Preston Evelyn Houstoun-Boswall Thomas Houstoun-Boswall-Preston Sir George Houstoun-Boswall of Blackadder, 3rd Bt.