Henri/Henry Merck bca 1717 either Switzerland or Germany. M 1st unknown, she was mother of his twins William & Mary. He married 2nd Eliz. Jamison and had son Robert bca 1868, lived Lewis Co. Ky. Name changed to Mark/Marks. Badly need info on lst wife. Did he bring her from Germ? or did he marry in US? When did he come to US?? He was my hubby's gr.grandfather.Thankyou very much.