For Benjamin Kissam, Esq. (whom we're in search of) we have two entries. The first entry is:
Rutgers, Petrus, dec'd--three houses at North River to be sold by Adrian Rutgers, Richard Sharpe, John Morin Scott and Benjamin Kissam (from New-York Gazette and Weekly Mercury on Jan. 10, 1774) pg. 182, ibid.
Benjamin was married to Catherine Rutgers. Petrus and Adrian were her brothers. Richard Sharpe and John Morin Scott, a lawyer in New York City and who worked with Benjamin on a number of cases, were her brother-in-laws married to Anna and Helena Rutgers respectively. It appears that another book by Kenneth Scott, Rivington's New York Newspaper, has similar information.
The second entry is:
Kissam, Benjamin, Esq., of NYC, attorney--died Oct. 25 in NYC and was buried Oct. 26 in the family vault in the New Dutch Church Yard (from New-York Gazette and Weekly Mercury on Oct. 28, 1782) pg. 238, ibid.
Trinity Church, where Benjamin served as a vestryman, has a record of his death in their burial records. The disease listed is "mortification" which, for the time, generally refers to death via gangrene of necrotic tissues. Catherine died in 1772 and was buried in the New Dutch Church Yard. Possibly in the Rutgers family vault and hence why Benjamin is buried there as well?
The other Kissam with an entry in this book is Daniel.
Kissam, Daniel, Esq., Judge of Court of Common Pleas, Representative for many years in General Assembly--died, as result of a fall from his horse, on Aug. 4 at his seat at Cow Neck, Long Island (from New-York Gazette and Weekly Mercury on August 19, 1782) pg. 237, ibid.
Unfortunately I can't provide much info on Daniel as I really don't know a whole lot about him.
Update from Toby K.: The Daniel who fell off his horse is a cousin, Daniel Kissam III. He had a 400 acre farm on the Cow Neck Peninsula (now Port Washington) on Long Island and was a loyalist. His son John was actually a major in the British army. Daniel's farm was one of two confiscated after the war and sold at auction. His widow bought it. I do have more info on that branch of the family, but I'll have to dig it out.
It's getting late so I'll stop for now. A lot of other family lines are listed and I'll post their entries though, like Daniel, with almost no extra information.