The origins of American football began in 1869. The intercollegiate football game between Rutgers and Princeton took place at Rutgers in 1869. There is no record of what player scored the first touchdown.
While there are touchdowns that have made history for the Green Bay Packers there is no known record of the first touchdown being scored nor by whom.
If you are thinking of American Football then i have no idea ,but there are not any touchdowns in the AFL
As far as the NFL is concerned, the first TD in NFL history was scored by Louis Partlow of the Dayton Triangles in a game against the Columbus Panhandles on October 3, 1920. George Kinderline kicked the first point after touchdown.
The first regular season TD in Broncos history was scored by Al Carmichael on a 59 yard pass from Frank Tripucka on September 9, 1960.
The first touchdown in Dallas Cowboys regular season history was scored September 24, 1960 on a 75 yard pass from Eddie LeBaron to tight end Jim Doran.
He scored his first touchdown against Southern Mississippi.
Louis Partlow scored the first touchdown in NFL history for the Dayton Triangles on October 3, 1920 in a game against the Columbus Panhandles.
Max "Maxi the Taxi" McGee scored the 1st touchdown in Super Bowl history for the Green Bay Packers.
Billy Andrews from Clinton Louisiana intercepted Joe Namath ran it back for a TD....