There are British surnames - I recognise John Donne, Shakespeare's poetic contemporary. Turns out Egerton is also a place in Kent, UK ("-ton" = "town") Egerton: "Edj-a-t'n". Think of "edge-a-ton". Stress on first and last syllables. One thing to remember with British surnames and place names is that the final syllable is a neutral 'uh' (schwa) sound. You're almost saying "tnn", not "tun". As a comparison, "Melbourne" is pronounced "Mel-b'n", not "Mell-born". Donne: "Done/Dun". In the name, the double-N makes the O short. We have an Australian artist Ken Done, but his name is pronounced with a long O: "Dohn/Doan". "John Donne! Are you done??" :D

Those don't appear familar to me, but if they're English names they're most likelt said; Egerton = Egg-err-tin Donne=Dawn or Dawn-eh The 'e' is mostly silent but in names it sometimes has a "aye\eh" sound.