What does Doron mean?
From the Greek word doron 'gift', adopted into Hebrew and now used chiefly in Israel. Directly means 'gift'; predominantly masculine but occasionally unisex.
What does Reuben mean?
Hebrew Re'uven, literally 'behold, a son!' (re'u 'see, behold' + ben 'son'). Genesis 29:32 layers a second biblical wordplay on it: Leah says 'the LORD has looked upon (ra'ah) my affliction' — that play is theological rather than the strict etymology.