William Birkenhead Mather Jackson Peerage person ID=446149 (1864–1934) Parents Sir Henry Jackson, 2nd Baronet Elizabeth Blackburne Children William Brabazon Mather Jackson Sir Anthony Mather-Jackson, 6th Baronet Sir George Christopher Mather Mather-Jackson, 5th Bt. Siblings Gertrude Elizabeth Mather Jackson Edith Sarah Mather Jackson Sir Henry Mather-Jackson, 3rd Baronet Hamilton Mather Jackson Frances Blackburne Mather Jackson Partners Georgiana Catherine Hallowes