Turkulin, Turculin, or Torcolin are variations of a surname rooted in the word torcolo, which refers to a type of press used for oil or wine, typically found in Italy and Croatia. This suggests that the surname may have originally been occupational, referring to someone who worked with or operated a wine or oil press, or perhaps someone who lived near one. The name likely has strong ties to agricultural practices and the production of wine or olive oil in the Veneto and broader Mediterranean region.