I can't claim him to be from my country, but i think everyone should know about Janusz Korczak, who ran an orphanage for Jewish children in Poland and refused to be save so as to not abandon his children. He was murdered in the Treblinka extermination camp in August 1942 together with the children, who he stood by until their last journey.

https://en.wikipedia.org/wiki/Janusz_Korczak#The_Holocaust_and_death

Korczak's diary survived the war; the last entry in it is from August 4.[44] On 5 or 6 (sources vary[44]) August 1942, German soldiers came to collect the 192 orphans (there is some debate about the actual number: it may have been 196) and about one dozen staff members to transport them to the Treblinka extermination camp. Korczak had been offered sanctuary on the "Aryan side" by the Polish underground organization Żegota, but turned it down repeatedly, saying that he could not abandon his children.[45] On 5 August, he again refused offers of sanctuary, insisting that he would go with the children,[45] asserting his belief: "You do not leave a sick child in the night, and you do not leave children at a time like this".

I recommend everyone to read more of his story.