Heat the olive oil over medium heat in a saute pan. When the oil is hot, add the pancetta & onion, and saute until the pancetta has become crisp around the edges and the onion is slightly translucent.
Increase the heat to high and add the white wine. Boil for a minute or two to let the alcohol evaporate.
Remove the pan from the heat and add the tomatoes to the pan, crushing them with the back of a fork as they go in.
Return the pan to the stove, lower the heat and simmer for about twenty minutes, or until the sauce has thickened and most of the has evaporated.
Taste for salt and pepper and season as required.
Bring a pot with plenty of water to the boil. When the water comes to the boil, add the salt and the pasta and cook for 2-3 minutes.
Drain the pasta and pour the sauce over and combine.
Garnish with freshly grated Pecorino Romano and enjoy!