Classify Danish-German-American Actor William Petersen

[CUNextWednesday]

Looks like there might be some Irish ancestry, but it isn't listed.

http://featuresblogs.chicagotribune.com/photos/uncategorized/billyshirt_2.jpg

http://2.bp.blogspot.com/-29lVx6NoOoM/TaciW-DTLRI/AAAAAAAAABQ/fhl_GiI5XNM/s1600/cousins01.jpg

http://images2.fanpop.com/images/photos/6000000/Billy-in-A-Streetcar-Named-Desire-william-petersen-6075700-395-550.jpg

http://3.bp.blogspot.com/-fTqdesE1pLE/UzG9AN6EH6I/AAAAAAAACYc/1HiyJuR1g3A/s1600/Manhunter.jpg

http://veryaware.com/wp-content/uploads/2013/02/TLADILA.png

[Not a Cop]

Atlantid mainly

[LightHouse89]

Looks Irish.

[GrebluBro]

Looks Irish.

Ditto

[CUNextWednesday]

Atlanto-Kelto-Brunn?

[Germaniac]

Looks Irish indeed. Atlantid-Brünn, hint of dinaricization.