Bonjour from France,
I've tried to found in a France geographic Atlas something like Lemmol, Semmol, Temmol or looking similar. Unfortunately, I do "chou blanc" (I've drawn a blanc).
On fGeneanetf, the name Tielle seems to be "Flamisch" and also German. But noyhing in Belgium
However on the Met was another personn looking for Pierre TIELLE. It's Nicole HOWLETT in Australia. May be can you have infos through that way.
http://en.geneanet.org/forum/?topic=430038.0On "familysearch.orgf a certain Peter TIELLE married Mary Ann BROWN September 03, 1866 in Dunedin, Otago, NZ.
I hope this will help you.
Have a good day.
Pierre