There are many common English first names though that do not have Czech translations. The only thing that changes across the languages would be pronunciation. Bellow are some obvious names that do have quick translations:

Male first names Alex = Aleš, Andrew = Ondřej, Anthony = Antonín, Charless = Karel, Eugene = Evžen, Frank = František, Frederick = Bedřich, Goerge = Jiří, Henry = Jindřich, Jacob = Jakub, James = Vaclav, Jerry = Jaroslav, John = Jan, Joseph = Josef, Larry – Ladislav, Milo = Miloslav, Peter = Petr, Rusty = Rostislav, Matthew = Matěj, Stanley = Stanislav, Steven = Štěpán, Thomas = Tomáš etc.

Female first names Ann = Anna, Barbara = Barbora, Blanche = Blanka, Camilla = Kamila, Christine = Kristýna, Claire = Klára, Elisabeth = Alžběta, Emily = Emílie , Frances = Františka, Georgia = Jiřina, Henriette = Jindřiška, Kathrine = Kateřina, Jean = Jana, Joanne = Johana, Judy = Jitka, Margaret = Markéta, Paula = Pavla, Rose = Růžena, Susan = Zuzana, Wendy = Vendula etc.

Many Czech Surnames could translate to English. For example : NOVAK = NEWMAN, NOVOTNY = NEWCOMER, SVOBODA = FREEMAN, CERNY = BLACK, VESELY = CHEERFUL, PROCHAZKA = WALKER, JELINEK = DEER, PTACEK = BIRD, RUZICKA = LITTLE ROSE, KRAL = KING, HORAK = HIGHLANDER etc.