Kaloyan's daughter Maria was betrothed to the second Latin Emperor, Henry of Flanders, who she is thought to have poisoned.
[6] Along with spreading Roman Catholicism, the Saxons also enriched the local vocabulary with Germanic words and introduced a number of mining techniques and metal-working instruments to Bulgaria.
Following the Liberation of Bulgaria in 1878 and its restoration as a sovereign monarchy, all four Bulgarian monarchs were of German descent: Prince Alexander I of Battenberg, as well as Ferdinand, Boris III and Simeon II, all three of Saxe-Coburg and Gotha.
German intellectuals, such as architects Friedrich Grünanger and Viktor Rumpelmayer, arrived in Bulgaria to foster its cultural development.
[17] On the eve of World War II, Germans in Tsarev Brod constituted the bulk of the village's 420 Catholic parishioners.
[16] Besides rural populations, Germans also settled in Bulgaria's larger cities as part of the group of the so-called "Lower Danubian Levantines", the Western and Central Europeans in the vibrant port and merchant cities of northern Bulgaria, such as Ruse, Varna, Veliko Tarnovo, Svishtov and Vidin.
As a result, 2,150 ethnic German Bulgarian citizens were deported from the country in 1943, including 164 from Bardarski Geran and 33 from Gostilya.