Sir James Colquhoun of Luss, 1st Bt. (1714-1786) (1714–1786) Parents Anne Colquhoun James Grant Children Ludovic Colquhoun Ann Sutherland Colquhoun Janet Colquhoun Helen Colquhoun Sir James Colquhoun of Luss, 2nd Bt. William Colquhoun Catherine Colquhoun Margaret Colquhoun Siblings Jean Grant Francis Grant Clementina Grant Ludovick Grant Penuel Grant Anne Drummouda Grant Charles Cathcart Grant Partners Helen Sutherland