The most common and most likely answer to this crossword clue is the 7 letter word ROMANOV
R
O
M
A
N
O
V
More clues leading to the result ROMANOV
- Chap in jumper opposing member of dynasty
- Dropping back, wander round country house in Russia
- Royal family moron comes out with a volume
- Russian imperial family wander endlessly around country
- Nice novel, very old, recalled one of 23
- Russian dynasty with country in range, dropping back
- Camper going around Arab land with old dynastic name
- European dynast from a novel's midsection
Buddy explains!

The straight part
We know that "dynastic name" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dynastic name = romanov.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.