Hazel Johansson - Hazel Yo-han-sen
Theo Johansson - Tey-oh Johansson
Agneta Johansson - Ag-neh-tuh Johansson
Joren Thøgersen -Yoh-ren Touerh-ger-sen

Note - it is difficult to find an accurate thing that is the same as ø in English, it is pronounced sort of like ouerh

Places, Currency and Other Things

Denmark is just under Sweden on the map; Sweden is that sticky out one close to the UK
The currency of Denmark is, and was, the Krone - Kroh-nuh. 20 Krone, Theo's salary at the start of Silenced is about equal to £2.16 and $3.46 by modern conversions.