His ancestor was Jeremiah Yellott, a designer and builder of clipper ships in Baltimore.

[2] Yellott was nominated for state's attorney of Baltimore County by the Republican while in the Army, but he declined.

He also engaged at the military court in Martinsburg, West Virginia, and had offices in Jefferson and Berkeley counties.

[4] He was appointed as state's attorney to replace N. Charles Burke, but he resigned the role after a few months.

[1][2] Yellott was an associate editor and publisher of a newspaper in eastern West Virginia.

In 1872 and 1873, Yellott joined William S. Keech and worked as an editor and publisher of the Baltimore County Herald.

[1] Yellott was a speaker at the unveiling of the Civil War monument at Druid Hill Park.

They had six children, Mrs. T. Scott Offutt, Mrs. Frank H. Worthington, Mrs. Carl Gaines, Osborne I. and John I.