WBC Flyweight Title Lineages from 1965 to 1968, is at present, Salvatore Burruni (1965 April 23 - 1966 June 14), Walter McGowan (1966 June 14 - 1966 December 30), Chartchai Chionoi (1966 December 30 - 1969 February 23).
But, The correct lineages was Salvatore Burruni (1965 April 23 - 1965 November 18), vacant (1965 November 18 - 1966 March 1), Horacio Accavallo (1966 March 1 - 1968 October 2), vacant (1968 October 2 - 1968 November 10), Chartchai Chionoi (1968 November 10 - 1969 February 23)
Walter McGowan did not get WBC Title.
1 WBC Ratings of that time
WBC Ratings
August 25, 1966
Flyweight - Champion Horacio Accavallo (Argentina), 1 Walter McGowan (United Kingdom), 2 Hiroyuki Ebihara (Japan), 3 Kiyoshi Tanabe (Japan), 4 Alacran Torres (Mexico), 5 Katsuyoshi Takayama (Japan), 6 Puntip Keosuriya (Thailand), 7 Rene Libeer(France), 8 Chartchai Chionoi (Thailand), 9 Rocky Gattellari (Australia), 10 Al Diaz (Philippines).
WBC Ratings
November 4, 1966
Flyweight - Champion Horacio Accavallo (Argentina), 1 Walter McGowan (United Kingdom), 2 Kiyoshi Tanabe (Japan), 3 Hiroyuki Ebihara (Japan), 4 Alacran Torres (Mexico), 5 Katsuyoshi Takayama (Japan), 6 Puntip Keosuriya (Thailand), 7 Rene Libeer (France), 8 Chartchai Chionoi (Thailand), 9 Rocky Gattellari (Australia), 10 Thongchai Supassamuth (Thailand).
Reference materials - WBA Ratings of that time
WBA Ratings
September 1, 1966
Flyweight - Champion Horacio Accavallo (Argentina), 1 Kiyoshi Tanabe (Japan), 2 Walter McGowan (Scotland), 3 Puntip Keosuriya (Thailand), 4 Hiroyuki Ebihara (Japan), 5 Katsuyoshi Takayama (Japan), 6 Chartchai Chionoi (Thailand), 7 Alacran Torres (Mexico), 8 Jose Severino (Brazil), 9 Thongchai Supassamuth (Thailand), 10 Salvatore Burruni (Italy).
WBA Ratings
November 2, 1966
Flyweight - Champion Horacio Accavallo (Argentina), 1 Kiyoshi Tanabe (Japan), 2 Walter McGowan (United Kingdom), 3 Puntip Keosuriya (Thailand), 4 Hiroyuki Ebihara (Japan), 5 Katsuyoshi Takayama (Japan), 6 Chartchai Chionoi (Thailand), 7 Alacran Torres (Mexico), 8 Jose Severino (Brazil), 9 Thongchai Supassamuth (Thailand), 10 Yuzo Narumi (Japan).
2 Articles of that time
(1) Burruni was stripped of not only WBA title, but also WBC title, in November 1965.
In ID 12608 Salvatore Burruni's records, Additional note "Burruni is stripped of the WBA belt in November 1965 for failing to defend against Horacio Accavallo." is in "1965-04-23 Salvatore Burruni UD Pone Kingpetch".
But, Burruni was stripped of not only the WBA, but also the WBC, in November 1965.
That source for reference
a. The Guardian, newspaper of United Kingdom, the 10th page, in the Saturday November 20 1965 issue
"Sports news in brief
Boxing
The World Boxing Council has withdrawn its recognition of Salvatore Burruni, of Italy, as world flyweight champion and authorised a match between Horacio Accavallo (Argentina) and Ebihara Hiroyuki (Japan) for the title. The council said it acted after Burruni ignored its recommendations and insisted on a title defence against Rocky Gattelari, of Australia."
b. The Times, newspaper of United Kingdom, the 4th page, in the Saturday December 11 1965 issue
"WORLD BOXING TITLE CONTROVERSY
Controversy broke out yesterday after Mr.J.Solomons, the London promoter, had announced that be had matched Walter McGowan (Scotland) and Salvatore Burruni (Italy) for the "world's flyweight championship". Mr.Solomons said the bout would take place at Wembley on March 15.
Shortly after his statement a British Boxing Board of Control official said, "The World Boxing Council, of which we are members, have stripped Burruni of his title for not defending it within the stipulated time against Hiroyuki Ebihara (Japan). It looks as though the forthcoming contest cannot be recognized here as a world title unless the W.B.C. decision is rescinded. We shall consult the W.B.C."(The rest is omitted.)
At that time, Burruni was stripped of not only WBA title, but also WBC title.
(2) Walter McGowan did not get WBC Title.
a. The Guardian, newspaper of United Kingdom, the 10th page, in the Wednesday June 15 1966 issue
"Not recognised
Mr L. Spota, the president of the World Boxing Council, said in Mexico City that the WBC did not recognise last night's fight between McGowan and Burruni as the world flyweight championship. The WBC disqualified Burruni as champion last November when he failed to meet its timelimit for giving Hiroyuki Ebihara (Japan) a chance for the title.
Spota said Horacio Accavallo (Argentina) was the only world flyweight champion recognised by the Council, having won the title against Katsuyoshi Takayama (Japan) in a bout ordered by the WBC to choose a new champion."
Horacio Accavallo held the WBC title until he retired on October 2, 1968.
WBC Ratings of that time
WBC Ratings
August 1968
Flyweight - Champion Horacio Accavallo (Argentina), 1 Raton Mojica (Nicaragua), 2 Chartchai Chionoi (Thailand), 3 Hiroyuki Ebihara (Japan), 4 Alacran Torres (Mexico), 5 Speedy Hayase (Japan), 6 Jose Severino (Brazil), 7 Walter McGowan (Scotland), 8 Octavio Gomez (Mexico), 9 Tsuyoshi Nakamura (Japan), 10 Nelson Alarcon (Argentina).
WBC Ratings
September 18, 1968
Flyweight - Champion Horacio Accavallo (Argentina), 1 Raton Mojica (Nicaragua), 2 Chartchai Chionoi (Thailand), 3 Hiroyuki Ebihara (Japan), 4 Alacran Torres (Mexico), 5 Bernabe Villacampo (Philippines), 6 Jose Severino (Brazil), 7 Walter McGowan (United Kingdom), 8 Octavio F. Gomez (Mexico), 9 Tsuyoshi Nakamura (Japan), 10 Nelson Alarcon (Argentina).
Please correct as follows, names of the world titles.
1965-12-02 Salvatore Burruni vs. Rocky Gattellari
Lineal World flyweight title
1966-03-01 Horacio Accavallo vs. Katsuyoshi Takayama
vacant WBA World flyweight title
vacant WBC World flyweight title
1966-06-14 Salvatore Burruni vs. Walter McGowan
Lineal World flyweight title
1966-07-15 Horacio Accavallo vs. Hiroyuki Ebihara
WBA World flyweight title
WBC World flyweight title
1966-12-10 Horacio Accavallo vs. Efren Torres
WBA World flyweight title
WBC World flyweight title
1966-12-30 Walter McGowan vs. Chartchai Chionoi
Lineal World flyweight title
1967-07-26 Chartchai Chionoi vs. Puntip Keosuriya
Lineal World flyweight title
1967-08-12 Horacio Accavallo vs. Hiroyuki Ebihara
WBA World flyweight title
WBC World flyweight title
1967-09-19 Chartchai Chionoi vs. Walter McGowan
Lineal World flyweight title
1968-01-28 Chartchai Chionoi vs. Efren Torres
Lineal World flyweight title
1968-11-10 Chartchai Chionoi vs. Bernabe Villacampo
vacant WBC World flyweight title