The most common and most likely answer to this crossword clue is the 5 letter word OSSIP which also is the latest solution we found used in New York Times in 1952.
Mark Twain's pianist son-in-law: first name crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters | 
|---|---|---|
| OSSIP | 100 % | 5 | 
Words with a meaning similar to the clue: Mark Twain's pianist son-in-law: first name
These words may or may not be a possible solution to this crosswords clue.- adam
 - initial
 - junior
 - jnr
 - lead
 - fils
 - charles
 - cain
 - nero
 - sam
 - eldest
 - designation
 
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution