Languages of Denmark
A large majority (86%) of Danes also speak English as a second language; it is mandatory for Danish students to learn from the first grade in the public elementary schools (), by far the most popular option in the country. In the 1st (or 3rd, depends on the school) grade of folkeskole, a third language option is given, usually German or French. The vast majority pick German (47% of Danes report being able to speak conversational German). The third most widely understood foreign language is Swedish, with 13% of Danes reporting to be able to speak it.
Sørensen
Sørensen is a Danish-Norwegian patronymic surname meaning "son of Søren" (given name equivalent of Severin). It is the eighth most common surname in Denmark, shared by about 2,3% of the population. 
Immigrants to English-speaking countries often changed the spelling to "Sorensen" or "Sorenson" in order to accommodate English orthographic rules. English-language media often similarly renders "Sørensen" it as either "Sorensen" or "Sorenson". A parallel form of similar origin is Severinsen.