First person in Germany to support King with money (4)
I believe the answer is:
rich
'with money' is the definition.
(rich can mean having a lot of money)
'first person in germany to support king' is the wordplay.
'first person in germany' becomes 'ich' (German for 'I').
'to support' says to put letters next to each other (in a down clue, some letters hold others up).
'king' becomes 'R' (abbreviation for rex, king in Latin).
'ich' put after 'r' is 'RICH'.
(Other definitions for rich that I've seen before include "Well-off" , "Very amusing; wealthy" , "Full-flavoured" , "Deep - laughable" , "Having lots of property" .)