Wojo's lawyer during a departmental procedure was David Fingler (seen here behind the lawyer representing the NYPD.) Fingler was from the firm Marshall, Levinson, Radcliffe, and Cohen which represented the Patrolmen's Benevolent Association. There are several theories of relateeveety that could be promoted from most of those names, which might have connections to other TV lawyers.
MARSHALL - Two solid possibilities here, with Owen Marshall and Emerson Marshall. The only downside for Owen Marshall would be his location - Owen worked in California, but he could have had a brother back East. Emerson lived in Manhattan and is the better candidate. His father might have founded the firm mentioned in 'Barney Miller' back at the turn of the Century, but he could have bolted to start his own practice with a lawyer named Bass (whose son may have been a Chicago doctor named Clifford.)
'OWEN MARSHALL, COUNSELOR AT LAW'
COHEN - Sandy Cohen was a lawyer in Orange County, California. He would have been too young to have started up what must have been a prestigious firm in NYC back in the 70s. (It was probably around since at least the 1950s.) But Sandy may have had an uncle who was a top lawyer in the Big Apple and served as an influence for Sandy.
LEVINSON - Although I have a lawyer in mind for a connection to this law firm, I'm more intrigued by the possible family tree for this Levinson. What if the firm's partner had a grandfather who was Harold Levinson, the dry goods heir from Ohio?
But if not, Levinson could have been the father of Marya Levinson, a New York defense attorney who might have worked in the family firm. Maybe the head of the firm was her father-in-law. (She appeared in three episodes.)
'LAW & ORDER'
It's the name "Radcliff(e)" which didn't thrill me when it came to candidates for family members in other TV shows. But that's okay; I don't want to look greedy.