unknown daughter Douglas Peerage person ID=469971 Parents William Douglas, 2nd of Cavers Children Thomas Kerr, 1st of Ferniehirst Walter Kerr of Cessford Andrew Kerr, younger of Aultounbrun and Cessford Siblings Sir Archibald Douglas, 3rd of Cavers NN Douglas, of Cavers Partners Andrew Kerr of Auldtounburn and Cessford