"Pennsylvania, County Marriages, 1885-1950." Index and images. FamilySearch.
Westmoreland County Marriage License Docket #40185
Groom - Clark R Kerr
Born - Sept 29, in Irwin, Pa
Residence - Irwin, Pa Occupation - Car-foreman
No previous marriage.
Bride - Margaret B. Lenhart
Born - May 22, in Irwin, Pa Residence - Irwin, Pa
No previous marriage.
Married - Jan 26, 1916 in Irwin Pa. by Pastor J. O. Glenn

The (Jeannette) News Dispatch
August 17, 1967
KERR
Clark Russell Kerr Sr., Englewood, Calif., died in Latrobe Area Hospital at 7:50 a.m. Thursday. Born in Irwin, he was a son of the late William and Martha Reese Kerr. He was a member of Latrobe Presbyterian Church and was general car foreman for Union Railroad, retiring in 1955 after 40 years of service. Surviving are his wife, Margaret Lenhart Kerr; three sons, Clarence, Azusa, Calif.; Rev. Russell Kerr, Latrobe; David, Monroeville. The family will received friends 3-5, 7-9 at M. S. Hartman Funeral Home, 1500 Ligonier St., Latrobe. Services will be held in the chapel of the funeral home Saturday at 1:30 with Dr. W. Sproule Boyd, Pittsburgh, and Dr. Harry Cost, Washingotn, Pa., officiating. Interment will follow in Irwin Union Cemetery.