In Loreto Aprutino in Pescara, the funeral was held for Giuseppe Chiavaroli, a 24-year-old student and footballer.
Residents lined the streets of the town, breaking into applause as a mark of respect as Mr Chiavarolli's coffin was carried into the church.
In L'Aquila, one resident said people were shocked to have lost so many loved ones.
"The town has been reduced to rubble with over 40 dead and lots of them were young," said Antonella Massi.
"A whole generation cancelled out."
Warning to looters
Silvio Berlusconi vows to take tough action on anyone caught looting
Speaking at a press conference in L'Aquila on Wednesday, Mr Berlusconi said some 17,700 people were sheltering in temporary camps set up by the authorities.
A further 10,000 were in other accommodation, he said.
Mr Berlusconi said he was concerned by reports of looting and was planning to introduce new legislation to impose "very severe punishment" on people caught committing the crime.
"Whoever is low enough to try to take advantage of a tragedy like this shows a total lack of morals and will be very severely punished," he said.
Troops will also be deployed to guard vacant homes, said Mr Berlusconi.
During an earlier visit to a camp, Mr Berlusconi caused controversy by comparing the experience to a "a weekend of camping.
Tremors
The Pope has praised rescuers, the police and the Italian authorities for their work after the quake.
But while rescuers had earlier expressed hope that more people could be found alive, that now appears increasingly unlikely.
Cristian Martinez of Spanish rescue organisation Unidad Canina said his team of rescue dogs had not detected any signs of life in the debris
"It all depends on the conditions, if the person under the rubble has any air or water," he said.
"But we don't give up hope."
The emphasis of the rescue operation will slowly shift to salvage and clearance, the BBC's Dominic Hughes reports from L'Aquila.
One man, the uncle of a student believed buried under the ruins of university accommodation, said in such circumstances, "hope dies last".
"But what can you really hope for here? The building just fell into the ground," he said.
Between 3,000 and 10,000 buildings are thought to have been damaged in L'Aquila, making the 13th-Century city of 70,000 uninhabitable for some time.
The head of the Italian Red Cross, Francesco Rocha, said it could be months or even years before all the displaced people could return to their own homes.
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