23 mentions are found for request
different sources from the year —1926 (10) 1927—1938 (5) 2007 (8)

Josip Kosir

Source: 'Encyclopaedia of Croatian Surnames , year 2007.

Vencel Kosir

Source: 'Encyclopaedia of Croatian Surnames , year 2007.

Žarko Košir

Source: 'Encyclopaedia of Croatian Surnames , year 2007.