Affixes to Hoklo names
http://www.taipeitimes.com/News/editorials/archives/2014/10/07/2003601465
there are some affixes to Hoklo names, such as tor, that often appear in names of places along rivers and are often preceded by numbers.
- Sietor (Sihdu, 四堵) in New Taipei City
- Goxtor (Wudu District, 五堵), Taipag
- Lagtor (Lioudu Borough, 六堵), Kelaang
- Chittor-khw (Qidu District; 七堵)
- Pehtor (八堵)
are some, but nobody seems to be able to accurately explain what to means.