I appreciate this is a late posting on this thread but just thought the following information may be of interest:
Frank Chapman Scargill died 27 Sep 1919 aged 82 at Beaufort House, Killarney. Probate was granted at Cork and sealed at London on 23 Mar 1920 with his estate in England valued at £4267 6s 6d. His widow Constance Mary (nee Landey) was appointed executor - she died at Dun Loaghaire on 4 Apr 1963 aged 84.
Going back to John Scargill, it was Grandmother Redford who was referenced in his will proved in 1848. This refers to Elizabeth Redford, mother of his first wife Mary Catherine Redford who died in 1830. Elizabeth survived her daughter and was living with John Scargill at Burton Crescent in London at the time of her death on 14 May 1833 aged 68. She made her will in March 1831 which was proved at the PCC on 25 May 1833. Son-in-law John Scargill was appointed executor and grandson John James Scargill was to benefit from her estate from the age of 21 onwards (1849). John James Scargill died 4 Feb 1915 aged 86 at Streamlet House, Bromley. His will was proved at London on 18 Mar 1915 with his estate valued at £1375 12s 8d - brother-in-law Samuel Scargill-Bird was appointed executor. Mary Scargill, wife of John, died at 51 Gower St, St Giles on 9 Oct 1882. Her will was proved at the Principal registry in London on 9 Nov 1882 with her estate valued at £8808 16s 5d. Son John James (then living at 84 High St, Islington) and nephew John Mitchel Chapman were appointed executors.