Final answer:
The specific Loyalist involved in both bribery and an assassination plot against George Washington is not named in the provided text, but Loyalists played various significant roles during the American Revolution, including intelligence gathering and supporting British military efforts.
Step-by-step explanation:
The Loyalist involved in several schemes to help the British, including providing bribery money and assisting in a plot to assassinate George Washington, is not explicitly named in the provided information. However, the actions of Loyalists during the American Revolution were significant and diverse. They served in the British army, led uprisings to distract American forces, provided supplies to British troops, and gathered intelligence. Intelligence gathering, for instance, was done by Ann Bates, who reported on American military capabilities. In terms of more severe activities, like assassination plots, the information given does not detail this. Nevertheless, other known Loyalists, such as Benedict Arnold after his defection, were involved in serious plots against the American cause.