BuzzFeed actually polled by ancestry, and German-Americans were super Trump supporters:
https://www.buzzfeed.com/peteraldhous/trump-and-the-white-vote?utm_term=.hqBya6yjy#.so5ZyVZoZThey have:
German: 33% Clinton, 51% Trump (Trump +18)
American: 33% Clinton, 50% Trump (Trump +17)
Italian: 33% Clinton, 44% Trump (Trump +11)
English: 37% Clinton, 43% Trump (Trump +6)
Irish: 39% Clinton, 40% Trump (Trump +1)
I also went through their raw data earlier and got this for the less-polled ancestries:
Swedish: Clinton 33%, Trump 48% (Trump +15) n=39
Polish: Clinton 35%, Trump 44% (Trump +9) n=125
Dutch: Clinton 34%, Trump 41% (Trump +7) n=41
French: Clinton 35%, Trump 35% (even) n=71
Norwegian: Clinton 37%, Trump 37% (even) n=49
Scottish: Clinton 41%, Trump 38% (Clinton +3) n=107
They also allowed volunteered responses, here are some of the more notable ones:
Danish: Clinton 45%, Trump 27% (Clinton +18) n=11
Greek: Clinton 47%, Trump 12% (Clinton +35) n=17
Russian: Clinton 67%, Trump 29% (Clinton +38) n=21