I pronounce it the same. I'd spell it
Frederick though
other
Fred names -
Alfred,
Wilfred Manfred Siegfred Sigfred
Wilfredo Alfredo Fredrickson Frederickson
Godofredo Goffredo Hunfredo Onofredo
Winfred Elfreda Freda Frederica Frederique Alfreda Fredia Fredericia
Wilfreda Winfreda Alfredia Fredalena Frederina Fredricia