Tammikuulla
Tammikuulla is a surname of Estonian origin. The name is derived from the Estonian word "tamm", meaning oak. It is a relatively common surname in Estonia. The distribution of the surname Tammikuulla is primarily within Estonia. While specific historical records are limited without further context, surnames of this nature often emerged during the 18th and 19th centuries as a way to distinguish individuals within communities, sometimes related to geographical features or prominent trees. The prevalence of oak trees in Estonia's landscape would have made "tamm" a natural source for a surname. Variations or related surnames might exist, but Tammikuulla itself is a distinct identifier. Further genealogical research would be required to trace specific family lines and their historical movements.