Classify Rodger Bumpass, Clancy Brown,Mary Jo Catlett & Lori Alan

[CelticViking]

Rodger Bumpass
http://media.screened.com/uploads/0/2774/303594-rodgerb_large.jpg

http://www.narragansett.k12.ri.us/NHS/computer/First_Semester_10-11/FS_2010_Period_1A/Harmony_Smith_Spongebob/0.jpg

Clancy Brown
http://images.wikia.com/spongebob/images/3/33/Clancy_Brown.jpg

Mary Jo Catlett
http://images4.fanpop.com/image/quiz/520000/520814_1294260168769_400_300.jpg

http://images.tvrage.com/people/10/29069.jpg

Lori Alan
http://img.filmous.com/static/people/61414/photo.jpg

http://images.tvrage.com/people_galleries/9/26440/48040.jpg

[leisitox]

Rodger: Pred. brunn/borreby(little reduced brunn)
Clancy: Brunn+ keltic-nordid influence
Mary Jo Catlett:Brunn
Lori Alan: Paleo-atlantid+atlantid influence

[GeistFaust]

Rodger Bumpass: Brunn with a minor North Atlantid influence.

Clancy Brown: Borreby/Brunn with a Keltic-Nordid influence.

Mary Jo Catlett: Kelto-Brunn predominantly, but the Keltic component is in the majority.

Lori Alan: Paleo-Atlantid with an Atlantid/North Atlantid influence.

[Castizoz]

Unfortunately, I found nothing about the family background of Rodger Bumpass (Squidward) on the Internet.
Since he's from the American South, he is pretty likely of colonial English stock.

Bumpass is a typical English surname.