淵源 is read as えんげん (engen) and means origin.
えんげん
engen
ふち
depths (e.g. of despair, etc.)
しげん
resources
でんげん
power (button on TV, etc.)
みなもと
source (of a river)
きげん
origin
ごげん
origin of a word
ざいげん
source of funds
すいげん
source of river
こんげん
root
しんげん
hypocentre (of an earthquake)
ちかしげん
underground resources
きょうきゅうげん
source of supply