 Complete the following phrase:  Fewer than a hundred Sardinian surnames are needed to group together as much as a third of the whole Sardinian population. The most common Sardinian surnames, like Sanna fang, Piras pears, Pinna feather, pen and Melis honey, derive from the Sardinian language and developed among the Judicates in the Middle Ages as a result of being registered in documents like the condaghes for administrative purposes; most of them derive either from Sardinian place names e.g. Fonnesu from Fonni, Busincu from Bosa etc., from animal names e.g. Porcu pig, Piga magpie, Cadeddu puppy etc. or from a persons occupation, nickname e.g. Pittau Sebastian, distinctive trait e.g. Mannu big, and filiation last names ending in -eddu which could stand for son of, e.g. Corbeddu sondaughter of Corbu; a number of them have undergone Italianization over the most recent centuries e.g. Pintori, Scano, Zanfarino, Spano, etc.. Some local surnames also derive from terms of the 