MD physician, Wester Moffat House, Airdrie
Alternative spelling William Clarke
Director Monkland and Kirkintilloch Railway
Director Ballochney Railway
Director Airdrie and Bathgate Junction Railway (not built)
Worked the Wester Moffat Colliery, one of the collieries the Ballochney Railway was built to reach, this being served by the Clarkston branch.
A principal founder of the Glasgow Free Church College, later Trinity College, Woodlands, Glasgow.
He left his fortune and land to William Towers, on condition he add Clark to his name (he became William Towers-Clark). He leased the mineral rights to Merry and Cunningham.