Rank
Surname
Incidence
Frequency
1
Perera
965,666
1:22
2
Fernando
583,843
1:36
3
de Silva
335,264
1:62
4
Bandara
254,719
1:82
5
Kumara
225,994
1:92
6
Dissanayake
193,396
1:108
7
Mohamed
173,370
1:120
8
Gamage
167,596
1:124
9
Liyanage
161,237
1:129
10
Jayasinghe
159,336
1:131...