Constantine J. Erdman (grandson of
Jacob Erdman) was born in
Upper Saucon Township, Pennsylvania, near
Allentown, Pennsylvania. He attended the common schools of the district and a classical school in
Quakertown, Pennsylvania. He graduated from
Pennsylvania College in
Gettysburg, Pennsylvania, in 1865. He studied law, was admitted to the bar in 1867 and practiced in Allentown. He was elected
district attorney in 1874. He served as
adjutant of the Fourth Regiment,
Pennsylvania National Guard, during the
riots at
Reading, Pennsylvania, in 1877. Erdman was elected as a Democrat to the
Fifty-third and
Fifty-fourth Congresses. He was not a candidate for reelection in
1896. He resumed the practice of law in Allentown. He served as a trustee of
Muhlenberg College at Allentown. He was president of the Coplay Cement Manufacturing Co., the Allentown &
Coopersburg Turnpike Co., and the Allen
Fire Insurance Co. for many years. He died in Allentown in 1911 and was interred in Fairview Cemetery. ==Sources==