Well, it looks like I had one of those invisible ghost-pires that was able to drain life after death, since burying the dead dorfs seems to have worked.*
In other news, Mistem Vumomfeb, the new commander of my crossbowdwarves and now mayor of my fortress, is a 242 year old vampire. He was one of three dwarves cursed to wander the night in "Containwheels". 'Vampbow1', as I've ingeniously named him, was cursed in the year 88. The other two were cursed in 161 and 189 respectively.
Out of curiosity, I looked him up in legends mode.
Born in the year 11 of unknown parentage, he became the holy steel of The Sect of Bastions in the year 70, ruling from Containwheels. 18 years later, he profaned The Cobalt Shrine, causing Ral Cobaltsteels to curse him with vampirism. It only took four years before he aroused enough suspicion from a murder to make him move to Soldierbridges. 1 year later, he became a hunter. The same year, he aroused more suspicion from yet another murder. For the next 161 years, he traveled the world, racking up an impressive 1962 kills.
Throughout his travels, he became a woodcutter, potash maker, farmer, ranger, miller, fishery worker, architect, administrator of Ridergear, a trapper, metalsmith, woodcrafter, clerk, bone doctor, woodworker, trapper, thresher, suturer, wax worker, strand extractor, and planter, before becoming mayor in my own fortress.
He's not as impressive as some other vampires I've seen, but he's getting a shrine anyway. Besides, as mayor, he demands it.
*Scratch that, the lasher was a 237 year old vampire with 3669 kills, about 3000 of which were humans. Oh well, time to build some shrines