It is not unusual for the mother's and godmother's surnames to be omitted within a baptismal record. The title of Magistro within this record was also a sign that the family was wealthy.
Baptismal Record of Giuseppe Gaspare Agostino Tessitore
Giuseppe Gaspare Agostino was baptized on 18 February 1767 in the Parish of San Giorgio Martire in Prizzi. He was the son of Magistro Salvatore Tessitore and Anna [no surname given], a married couple. Salvatore was the son of the deceased Magistro Agostino [Tessitore]. The child’s godparents were Magistro Gaspare Butera and Innocenzia [no surname given], the wife of Giuseppe Orlando.
 Parish of San Giorgio Martire, Prizzi, Palermo Province, Italy, “Registro di Battesimi [Register of Baptisms], 1767,” unnumbered, p. 394, 18 February 1767, baptismal record for Giuseppe Gaspare Agostino Tessitore; digitized images, FamilySearch (https://familysearch.org/ : accessed 1 January 2014).