Yes it's the same author. Looks like the text of that booklet is available here:
http://www.thegloriousgospel.ca/why-i-abide-by-the-authorized-version-kjv-william-hoste/
I don't have a scan.
William Hoste – 16th July 1860 ~ 1st March 1938
Birth: Sandgate, Kent, England.
Marriage: 20th December 1917 at Ongar, Essex, England.
Death: 157 Walm Lane, Cricklewood, Middlesex, England.
Wife: Gertrude Anne Walford Jones – 12th Sept. 1883 ~ 11th Apr. 1961.
Children:
William -
Grandfather: Col. Sir George Charles Hoste – 10th Mar. 1786 ~ 21st Apr. 1845.
Grandmother: Lady Mary Burroughes: 11th Jan. 1790 ~ 28th May 1870.
Father: Gen. Dixon Edward Hoste – 15th Mar. 1827 ~ 10th Sept. 1905.
Married on 4th August 1857 at Henstead, Norfolk, England.
Mother: Mary Scott – 1837 ~ 5th March 1908.
Siblings:
Dixon Arthur (H. Clabburn) - 25 Dec. 1854 ~ 28th May 1935.
Mother: Jane Mary Burroughes – 4th Nov. 1832 ~ 19th Jan. 1855.
Married on 29th December 1853 at S. Burlingham, Norfolk.
Cecilia (Cecil) Mary (J.W. Stirling) Apr. 1859 ~ 19th Nov. 1942.
Rev. Dixon Edward (A.G. Broomhall) - 23rd July 1861 ~ 11th May 1946.
Rev. Theodore Hamilton - 13th Aug. 1863 ~23rd March 1933.
Jane Margaret (E.A.G. Tippinge) - 1865 ~ 31st May 1946.
Mary Eleanor (C.E. Welldon) – 12th Dec. 1867~ March 1954.
James Derrick - 13th November 1869 ~ 28th January 1893.
Rev. Charles Dixon (B. Brooke) - 7th Feb. 1872 ~ 4th April 1957.
Francis (Frank) George - 7th April 1874 ~ 1902.
Florence Cecilia (L.C. Koe) - 1875 ~ 3rd Nov. 1936.
George - ? ~ 1868.