After the Revolution, Yeates was a delegate to the Pennsylvania convention that ratified the United States Constitution in 1787.

One of the sons, Joseph Horsfield was a delegate in the Pennsylvania convention to ratify the Federal Constitution.

He was elected to the Pennsylvania convention which adopted the Federal constitution and was appointed treasurer of the U.S. Mint, serving from 1797-1813.

He was vice president of the Pennsylvania constitutional convention and was the Judge of the Admiralty Court of Pennsylvania in 1779.

Epiphany Chapel was admitted to the Diocese of Pennsylvania convention in 1878 as a mission of Church of the Epiphany.

He was a delegate to the Pennsylvania constitutional convention in 1837 and 1838.

For example, the Pennsylvania convention debated fifteen amendments, one of which concerned the right of the people to be armed, another with the militia.

He was a major opposition voice in the Pennsylvania convention that ratified the federal Constitution and was a signer of the Minority Dissent.

In 1787, he was part of the Pennsylvania convention held to consider ratification of the United States Constitution.

"The Pennsylvania convention?"