The Clarks moved from Newtown to
Dulwich Hill in 1890, where they built a house named Sefton Hall, named after
Sefton in Lancashire. Sefton Hall was the first house in Sydney to have a private swimming pool. That first Sefton Hall was demolished in 1914 and subdivided for housing. The Clarks purchased land near
Hornsby in 1907, on which they built their winter house of
Mount Wilga. They built a summer house in
Mount Wilson in 1912, which they also named Sefton Hall. This replaced their
Mount York home of Drachenfels, to which they never returned following the death of Clark's son, Byron, in a cliff fall in 1899. Drachenfels itself was destroyed by bushfire in 1902. ==Death==