For Sillus there are 4 on Yasni with different names.
Among the most common last names on Yasni Sillus is on position 4523.
Sill stands for moor, heath, dirt. What is meant is not so sophisticated, barely workable land with little hope for short-term agricultural yield. As an example of a place is Heydekrug in Lithuania, the national language Silute. In fact, the majority of ancestors with the surname originate Sillus of exactly the area and partly in the 19th Century have emigrated.
(Sent from Yasni user)
