Sie suchten nach: first son (Englisch - Latein)

first son
filius primus

the first son
tertius filius

first
primus

first book
liber primus

always first
semper prima et novissima

first, always
prima perpetua

first grace;
primus delicti

duty comes first
primum officium

first time every time
primum everytime

excellent first (citizen)
optimo principi