Muppet Treasure Island has Old Tom, Real Old Tom, and Dead Tom.
Terry Pratchett writes of the Nac Mac Feegles in his discworld books. They include characters named Jock, Big Jock, Medium Sized Jock, Wee Jock, and No’-as-big-as-Medium-Sized-Jock-but-bigger-than-Wee-Jock Jock.
DAMMIT!
I was just looking up the exact phrasing of Jock’s name when a certain someone beat me to it!
Breaking Bad (Walts senior and junior).
Dickens’ novel Martin Chuzzlewit has two characters by that name: the protagonist, and his grandfather.
Wilkie Collins’ novel Armadale has multiple characters named Allan Armadale.
Sealab 2021 had Debbie and Black Debbie.
I’m assuming that cases where one character is named after another don’t count.
The later Avengers movies had two Peters, Parker (AKA Spider-Man) and Quill (AKA Star-Lord). This is presumably due to them originally being completely separate works that got mashed into each other.
Apparently in Batman vs. Superman, their first moment of bonding was when they learned that both of their mothers were named Martha.
Lord of the Rings has a few: The hobbit farmers Cotton and Maggot, as well as the whatever-he-was Bombadil, are all named Tom, and the inkeeper Barliman, the ne’er-do-well Ferney, and the pony are all Bill.
The Dresden Files books include Michael the Archangel, Michael Carpenter the knight (though he’s presumably named, directly or indirectly, after the angel), and Mike the Volkswagen mechanic. Though I think that the knight is the only one who ever appears “on screen”, as it were. The series also has Susan, a love interest, and Sue, an apex predator, though Sue was already named before Dresden included her in the book.
The Traveler, by our own @CalMeacham, has a protagonist who’s known as Tenobius, but it’s eventually revealed that that’s a variant on his surname, and his given name is Marc, same as the narrator
The video game City of Heroes includes a number of pairs or trios of NPCs who have the same name for no particular reason (plus many more for whom there is a reason), such as mutants Penny Preston and Penny Yin, witch Katie Hannon and government telepath Katie Douglas, and speedster Steve Berry, scientist Steven Sheridan, and archvillain Stephan Richter. Though there are enough NPCs in that game that it’d be difficult for everyone to have a unique name.
The long-running British soap opera Coronation Street had, in the 80s, characters named Betty Turpin and Bet Lynch.
A lot of it, as I recall.
The Bible gives us the apostles James and James-the-Less. Sucks to come in second, doesn’t it? Imagine being stuck with that nickname for 2000 years.
Anna Karenina has two characters called Alexei AND two called Sergei. Plus another Anna.
Rescue Me had Sean and Black Shawn, so named not because he was black, which he was, but because they already had a Sean in the firehouse.
Die Hard had Agent Johnson and Agent Johnson. No relation.
So ‘black’ was just a randomly chosen designation?
Not exactly what the OP is looking for, I know, but I just re-watched Blazing Saddles, and almost everyone in town has the same last name – Johnson (which go used in a lot of jokes, like “Howard Johnson – One Flavor”).
In the film The Englishman who went up a Hill but Came Down a Mountain practically everyone in the Welsh town has the last name “Jones”, about which a lot is said. Several people also have the same first name, so this movie is filled with people with the same first and last name. The all have different nicknames, though, to distinguish them.
The Englishman Who Went up a Hill but Came down a Mountain - Wikipedia.
And in Spaceballs, Dark Helmet is surrounded by Assholes.
A lot of Russian novels have this feature, I think. There are either not enough Russian names or they just like a few of them a whole lot. And then the characters all have various nicknames as well, and patronymics, and it just gets damn confusing without a character list.
Willkie Collins’s Armadale had three characters named Allan Armadale: a man who is murdered, his son, and the son of the murderer.
The movie Scott Pilgrim vs. the World has the main character, Scott Pilgrim, and also a minor character called “Other Scott.”
How many Marys are there in the Bible?