Lives and philosophies of these men are included.
As you summarize Livingston and his philosophies, please note that he was born in 1723 in Albany, NY (http://odur.let.rug.nl/~usa/B/livingst/livingst.htm). Like several other figures from this era, he also entered a career in Law.
In terms of his notability and philosophies, you might add that he opposed some of the conservative beliefs and groups. Instead, you might comment that he was highly associated with the Calvinists in religion (http://odur.let.rug.nl/~usa/B/livingst/livingst.htm). Specifically, you might note that he strongly opposed any "parliamentary interference in the colony's affairs. During this time, 1759-61, Livingston sat in the assembly" ...
William Livingston, David Brealey, and Thomas Mifflin are listed.