Sam Collyer (born Walter Jamieson, May 14, 1842 in Boulogne, France – December 7, 1904 in Brooklyn, New York) was a bare-knuckle boxer, and the American Lightweight Champion.

Collyer ended the contest when he knocked his opponent off his feet, and Bolster's seconds threw in the towel.

[5] Later that year, Collyer battled former champion Young Barney Aaron for the vacant Lightweight Championship of America.

The fierce battle was contested for 47 rounds taking 2 hours and 14 minutes before Collyer was declared the winner.

At the close of Round 47—He was entirely blind, and his seconds seeing that there was no possible chance of success and unwilling to subject a game man to further punishment threw up the sponge in token of defeat.

[9] The two battle for 47 rounds and 55 minutes in the sleet covered ring before McGlade's corner threw in the towel.

The two contested in a hard-fought battle for 68 rounds and 1 hour and 55 minutes at Aquia Creek in Northern Virginia.

The fight began at 8:50 am, with around 1500 in attendance and was fought outdoors in an Amphitheater on the banks of Aquia Creek in Northern Virginia.

Young Barney won the choice of position and wisely took the side of the ring not facing the sun.

The Collyer/Kelly contest was held on November 27, 1867, in Strickland, PA. Collyer pressed the fight from start to finish, and his opponent was forced into the defensive mode for nearly the entire bout.

A total of 111 short rounds and 1 hour and fifty minutes were fought before the champion knocked his opponent down for the final time.

They were documented in the New York Herald the day after the contest: Round 109—Collyer, determined to close fight before dark, rushed in [? ?]

He then went around among the crowd and collected money for the man he had beaten in a fair fight for the championship of the lightweights of America.

The American Lightweight Title was again decided in this fight, this time with Collyer throwing in the sponge in 40 rounds.

[16] Collyer sent the final installment for the stakes by courier, however they did not reach the stakeholder before the agreed time, thus forfeiting the match to Edwards.

In the New York Clipper's article from 22 August 1874, covering the fight it said: "...Barney Aaron called on him to open his hands.

Sam Collyer was the trainer for, and seconded Billy Walker in a prize fight verses Jimmy Weedon on August 31, 1876, in Pennsville, NJ.

[28] After retirement Collyer began working as a machinist in the Brooklyn Navy Yard, and remained there until his death on December 7, 1904.

During his life he raised the teenage sons of his late brother, Henry Jamieson, and performed with the boys in Barnum and Bailey show.