Here are a few possibilities, depending on how you want the "Lav-" sound to be rendered:
* Λαβρεντία (Lavrentia): This is probably the closest and most straightforward transliteration, using common Greek letter combinations. The "v" sound is represented by "β" (beta).
* Λαβρενδία (Lavrendia): This version keeps the "nd" intact, potentially offering a closer match to the original spelling's sound.
* Λαυρεντία (Lauretia): This changes the initial "Lav" slightly, closer to a "Laur" pronunciation which might be closer depending on the origin of the name.
The best option depends on context and intended pronunciation. If you have more information on the origin of the name, a more accurate transliteration might be possible.