 Unable to read his handwriting due to failing light, Parker went to the table and read out a detailed scheme of twenty articles for the League's organisation.His health failing, Parker carried on working until the summer of 1918, before passing away on 12 July at Aldworth House, near Lurgashall, Sussex, the former residence of Lord Tennyson.On 9 September 1884 he married Constance Barkley, the daughter of a civil engineer; they had three sons and two daughters.