As of Wikipedia the surname Trump is a name of English and German origin (https://en.wikipedia.org/wiki/Trump_(surname)).
When we take a look in the public German Phonebook @ dastelefonbuch.de, there are 176 entries under the surname Trump. Wikipedia states, that the majority of people with the surname are living in the United States (close to 5,000 individuals), the UK Phonebook (ukphonebook.com) shows 100 records in London: 2 free telephone results, 68 companies house results and 30 premium results.
In Switzerland, in “The official Swiss phone directory” (tel.search.ch) are 245 entries listed for the name Trump. The White Pages Australia (whitepages.com.au) only found 7 results nationally.
What about in your area? Do you know anyone personally with the family name Trump? Write in the comments below….