One who founded dynasty in America after gold rush (8)
I believe the answer is:
augustus
'one who founded dynasty' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'america after gold rush' is the wordplay.
'america' becomes 'US' (United States).
'after' means one lot of letters go next to another.
'gold' becomes 'Au' (Au is the chemical symbol for gold).
'rush' becomes 'gust' (I have seen 'Rush of wind ' mean 'gust' so perhaps 'rush' could also mean 'gust').
'au'+'gust'='august'
'us' put after 'august' is 'AUGUSTUS'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for augustus that I've seen before include "one whose name was John?" , "Roman emperor, of a summer month?" , "head for Rome" , "Fort --, Scottish town" , "old ruler" .)