Back before newspaper archives online, my husband got me a large microfilm reading that would go directly into our computer. NY State Archives sent microfilm of the 1700s newspapers and I spent a year in a tiny room from waking to sleeping living in a time when George Washington was spoken of in the present tense. It was priceless research I was doing for Night Before Christmas. Besides tracking down every person that ever interacted with Henry Livingston, I was having to identify which newspaper poems would be his based on pseudonym or style. Learned a MASSIVE amount about pseudonyms out of that year.
The poem also appears in his handwritten poetry manuscript book, and the child’s name was actually Timmy Dwight, son of Rev. Timothy Dwight the president of Yale, and a cousin of Henry’s wife. That’s how we guarantee the connection of the R pseudonym with Henry.