Yes.
Atu Snataru. An elite bowgoblin. In the spring of '48 he was a mere Lieutenant to the goblin spearmaster Zolok. However, he proved himself quite worthy. During a siege of about 30 foes he lead a squad of bowgoblins. They crept towards the front gate of my above-ground fort, hugging the wall for cover. He fired up through a fortification and killed a gate marksdwarf guard. I pulled all my marksdwarves back to defend the main gate. He and his squad stopped just short of our traps, two z-levels down and a good 10 squares away and peppered the main gate towers. Of the eight marksdwarves stationed in the main towers, four lost their lives and two had to retire from service.
From what I now understand of ranged combat mechanics, those kills and wounds were all almost certainly from the elite.
They were so close to breaking through, but a group of wrestlers tried to rush past them and got cut down. Having taken enough casualties they gave up. Their leader retreated without ever seeing battle. Then in the winter of '48 Atu was back, only this time there were almost three times as many goblins. And Atu was their leader! I think there were about 10 bowgoblins but around 20 crossbowgoblins. The ranged firepower was truly terrifying, so the drawbridge was raised until a plan could be formulated.
The dwarves fell back inside and carved fortifications out of the walls behind the main corridor. The new trade path would travel underneath the fortifications via ramps. All the marksdwarves stood behind the fortifications, ready to riddle anything that survived the traps with arrows.
The first squad of wrestlers fell to the traps and a hail of bolts. And this is what I think turned the tide ... their ammunition used up, the marksdwarves reached behind them to an ammo stockpile and grabbed steel bolts! By the time Atu's squad reached the gates, the steel bolts were loaded ... no more wussy bone bolts. Despite the fact that most of the stonefall traps had been triggered, the bowgoblin squad made no progress and they were all cut down.Atu survived three (!!!) stonefall trap hits and a hail of bolts before retreating out of range. I had to send some axedwarves after him to finish the job, and he managed to take out one of their eyes with a bolt before falling.
I don't think there is any way to examine the kills of enemies, but I am pretty certain he killed at least five of my dwarves.
Alas, none of Tradesnarl's artifacts depict this battle. Most depict mundane things like the first dwarf to fall into the chasm or a swallowman that stumbled apon a kobold thief and was subsequently killed.
EDIT: Before the first battle with Atu I had never lost a marksdwarf that was behind a fortification. And he slaughtered my militia like they were standing in the open. I have a new found respect for elite ranged units.