Hello. I happened to come across this post and thought to share what I know about the Sri Lankan monastic Pali name. From my understanding, there are two parts to a Sri Lankan monastic Dhamma name. The first part is named after the village of the monk who enters the monastic life and the second part is selected by the monk's preceptor and it usually points toward some aspiring character. For example, Bhante Madawala Seelawimala (Bhante = Sinhalese equivalent of venerable, Madawala = village name, Seelawimala = rustless virtue). With Sri Lankan monastic, we usually address them without the village name component so just Bhante Seelawimala or just Bhante in general. If for example we happen to come across a Bhante Rahula and another Bhante Rahula, then the village name component is used to distinguish the two such as Bhante Wapola Rahula and Bhante Pallawela Rahula. In Pali, "Rahula" means fetter and "Seela" or "Sila" means virtue or good conduct and "wimala" means no rust whereas "mala" means rust.