Sir James Colquhoun, 4th Baronet, of Luss British politician (1804–1873) Parents Janet Colquhoun Sir James Colquhoun, 3rd Baronet, of Luss Children Sir James Colquhoun, 5th Baronet Siblings John Colquhoun unknown daughter Colquhoun Sarah Maitland Colquhoun William Colquhoun unknown son Colquhoun Helen Colquhoun Partners Jane Abercromby