Longworth was educated at the public schools in Cincinnati, and graduated from Harvard University in 1866 with high honors.

[4] In 1876, Longworth was elected to the Common Pleas Court of Hamilton County for a five-year term.

He formed a short-live legal partnership with Thomas McDougall, which dissolved upon his father's death late in 1883.

[4] Longworth died of pneumonia at Rookwood, his estate on Mount Adams, on January 18, 1890, and was buried at Spring Grove Cemetery.

She was the daughter of the late Timothy Walker, one of the founders and Dean of the Cincinnati Law School.