Following the name of the champion(s): Indicates the number of times the wrestler has held that title at that point.
[...]
Indicates a gap in the listing where title changes are not known.
*
If used next to the names of the wrestlers, they may, in fact, not have held the title in the period indicated. If used next to the dates or places, either they are possibly wrong or the title changes are fictitious.
<
Title was held or changed hands no later than this. In these cases, it is known that a wrestler held the title at a certain time but not when he/she won it.
+
Broadcast date; the actual recording date is unknown.
@
Order uncertain. Different titleholders may be known for the same year, for example, but it is not known who held the title before whom.
#
Unofficial or disputable claims. These are usually matches that certainly took place, but where there is doubt that the wrestler shown should be recognized as a true title holder. These listings are also italicized in HTML files
Billed as champion upon arrival in Windsor, ON by the Toronto-based Queensbury Athletic Club for having "recently captured" the title (The Windsor Daily Star, 47-01-07); still/again champion as of 48-05-21.
Billy Raborn
1947-07-28
Windsor, ON
Defeas Alex Kasaboski in tournament final to be recognized by the Detroit office; still champion as of 47-08-11; Martino Angelo, light heavyweight champion in Hamilton, ON, is billed as the junior heavyweight champion in Windsor, ON in 47-10 (The Windsor Daily Star, 47-10-17) possibly by mistake; Raborn is still/again champion as of 48-01-30.
Stocky Kneilson
1948-02-09
Windsor, ON
Still champion as of 48-04-02.
[...]
Martino Angelo
1948-10-15<
Frankie Hart
1948-11-01
Windsor, ON
Vacant in 49-04 when Hart leaves the country; temporarily retires later in the year due to the injury suffered in an automobile accident (The Winnipeg Tribune, 49-12-01).
* Thanks to Jamie Greer for additional information.