Hello Geraldine. I have indeed come upon some information on my Loitscher family, although it is not very thorough by any means. The information I have comes from some pages I have of the Stammbaum der Familie Buol, which the Loitschers intersect at various points. Here's what I know:
My great-great-great grandfather, Christian Buol (1829 - 1900) married Katharina Lötscher. His sister, Margreth Buol (1823 - 1892), married Johann Lötscher (he died and she remarried). Their sister, Magdalena Buol (1825 - 1901), married Christian Lötscher. I presume these Lötschers to all be of the same family.
Katharina's parents were Peter and Dorothea (Engel) Lötscher. I also have record of an Elisabeth (Ruosch) Lötscher being a witness at Peter's baptism.
Also on my sheet of baptism records I can see at other baptisms a Christina (Ruosch) Lötscher; a something Anna Lötscher.
I want to note that the Lötschers in my family appear to be from, to some extent, the town of St. Antönien. They were not near Canton Berne, at least from what knowledge I have, which is quite admittedly limited.
I saw no Trincanos, sorry. That sounds kind of Italian though. To my knowledge my Buol ancestors around that time were in a predominantly German part of Switzerland.
If you have any other questions please feel free to ask again. I may be able to give you an email address of someone who could help you with some research.