Pietro and Rosa Eccher's marriage in Pergine church records is on microfilm available from the LDS. The film number where it is located: FHL 1329826 which is a film of Matrimoni 1673-1886 Pergine
The marriage record states that Pietro Eccher is from S. Catarina. S. Caterina (Castagne) has some records on microfilm also, but the marriage records for S. Caterina start in 1913---perhaps that is why Pietro Eccher's marriage is recorded in Pergine as marriage records there start in the 1500's.
The baptism record for Bartolo is possibly to be found in S. Caterina (Castagne). (I did search Pergine for Bartolo's baptism, it is not there.) S. Caterina records have baptism records that start with 1810 and go through 1923 on microfilm number FHL 1329828 (item 6-12).