Mande (long mark over e) nomen tuum in memoria (long mark over the a) literally means : entrust your name in memory
You could just use Mina, but the plural of this word (minae) is Latin for 'threats'.
Lynn
Gemma is the Latin word for "gemstone; jewel'.
Latin - Iacobus.
Donati (if you don't trust me go on to google translate)
Andreas jachus caramus
Jasonus McDonoughdi is the name Jason Mcdonough in Latin or Greek.
Cristina Hecert
It was probably a Latin word. If you can, check a Latin dictionary and translate.
Amanda itself is actually Latin. In Latin, Amanda means 'she who must be loved.'
This is difficult because Chrissie seems to me to be a nickname, but I would guess the Latin would be Christa
Iason - Iasonis, 3rd declension masculine