Not sure if this is any use to anyone but I used
Hhascup's lineage plus Senya's correction to produce an easy to read breakdown. I'm not sure how accurate it is either but if anyone has any corrections i'm sure they'll let me know
Name; Reign; Defences
Charles C Smith; 1876-1881; 0
Prof Charles Hadley; 1881-1883; 3
George Godfrey; 1883-1888; 2
Peter Jackson; 1888-1896; 0
Bob Armstrong; 1896-1898; 1
Frank Childs; 1898-1898; 2
George Byers; 1898-1901; 1
Frank Childs(2); 1901-1902; 0
Denver Ed Martin; 1902-1903; 4
Jack Johnson; 1903-1909; 19
Sam McVea; 1909-1909; 1
Joe Jeannette; 1909-1909; 0
Sam Langford; 1909-1911; 10
Sam McVea(2); 1911-1912; 0
Sam Langford(2); 1912-1915; 21
Joe Jeannette(2); 1915-1915; 1
Sam McVea(3); 1915-1915; 0
Harry Wills; 1915-1916; 2
Sam Langford(3); 1916-1917; 13
Bill Tate; 1917-1917; 0
Sam Langford(4); 1917-1918; 5
Harry Wills(2); 1918-1926; 28
George Godfrey; 1926-1928; 4
Larry Gains; 1928-1930; 0
George Godfrey(2); 1930-1933; 5
Obie Walker; 1933-1935; 0
Larry Gains(2); 1935; 0