Did it ever happen that a Christian died simply because he had no food at his disposal? This question can be restated as: how to interpret Matt 6:25-34 where Jesus tells us not to worry about food and clothes. Is it a promise that a Christian will never die for lack of food? Or is it not?
The Democratic Republic of Congo (DRC) is 95% Christian. The recent conflicts have killed as much as 5.4 million people. A summary of the details states,


  more than 90% were not killed in combat, dying instead from malaria,
  diarrhea, pneumonia and malnutrition, aggravated by displaced
  populations living in unsanitary and over-crowded conditions that
  lacked access to shelter, water, food and medicine.


One could argue that the death toll is wrong, and some people have done so. Or, one could argue that for the deaths that were due to malnutrition and starvation were only among the remaining 5% who weren't Christian. One could also argue that the statistic is inaccurate by saying that those who died weren't real Christians. None of that seems convincing to me. At least one Christian died from hunger-related causes in that conflict.

For individual, anecdotal cases, you may refer to this list. Perhaps none were Christian. Thomas Johnson seems like one, but maybe forced starvation doesn't count? Granted, one can explain away individual cases all day, so I prefer the statistical answer, but sometimes both are useful.

My tongue-in-cheek comment, "Has a Christian ever stubbed his toe?" is intended as a joke (for which I meant no offense), but it's related to this issue. Coming from the same chapter as my glib (and probably bad) joke, Psalm 91:3 states,


  Surely he will save you from the fowler’s snare and from the deadly pestilence.


If you interpret verses that insist on God's protection and provision as being for our physical needs, you will only be right some of the time. Christians die from car accidents; Christians die from cancer; Christians die from starvation.

What did Jesus mean in Matthew 6? I'll suggest emphasis on his question in the last part of verse 25, "Is not life more than food?" Surely food is required for life, yes? He is not referring to physical food. In John 6:35, I think this is more clear:


  Then Jesus declared, “I am the bread of life. Whoever comes to me will never go hungry, and whoever believes in me will never be thirsty.


Jesus did not claim that those who follow him would never go (physically) hungry.