Hasan Tahsin was an Albanian,[1][2] born in Mesare (located in Albania on the border with Greece), which at the time was part of the kaza of Leskovik.

In 1908–1910, he served as the governor of Yemen before returning to Thessaloniki, where he assumed the post of commanding officer of the III Corps with the rank of Ferik (Lieutenant General).

As tensions with the Balkan League grew at however over the summer of 1912, he was switched to command the VIII Provisional Corps at Thessaloniki.

After the outbreak of the First Balkan War, he led his forces against the Greek Army of Thessaly under Crown Prince Constantine.

The other son Qemal Messare moved to Albania, worked as a functionary in the Ministry of Internal Affairs, in King Zog's Residence, and was appointed Ambassador to Greece in January 1933, where he served until 1934.