Well the only 'similar' name (which you had already mentioned) which I found some information on in Italy was COLAMUSSI. I found no other names that had any resemblance.
What I found were these names:
Giulia Colamussi
Gender: Female
Birth: About 1571 Of, Rutigliano, Bari, Italy
Giulia Colamussi
Gender: Female
Marriage: 07 APR 1592 Casamassima, Bari, Italy
Vincenzo Colamussi
Gender: Male
Birth: About 1810 Turi, Bari, Italy
Vincenzo Colamussi
Gender: Male
Marriage: Before 1836 Turi, Bari, Italy
Wife: Antonia Pascalicchio Birth: About 1810
Son: Vito Modesto Colamussi
Gender: Male
Birth: 1836 Turi, Bari, Italy
Vito Modesto Colamussi
Gender: Male
Marriage: 16 JAN 1864 Turi, Bari, Italy
Wife Giulia Maria Carenza.
Birth: 1838
Her Father: Giovanni Carenza
Her Mother: Maria Lucrezia Palmisani OR Palmisano
As you can see they are all from near Bari - Turi, Rutigliano and Casamassima which as you can see
>HERE< are very near to one another.
Doesn't mean they're 'your' ancestors, but it may be a step in the right direction....
If you want anymore details let me know and I'll see what more I can find.