Some names just fascinate me. Some are poetical, lyrical in their their beauty. Others make me wonder as how they were acquired. Dismountsthrice is one of those.
In the Carlisle Indian School records, I found a record for Edward Dismountsthrice, a Sioux from South Dakota. Dismountsthrice is not a surname that is common, to put it mildly. In fact, I figure there is probably one family line in the entire county with this surname. I set out to see what I could discover about Edward Dismountsthrice or the rest of the family. I half expected to find nothing, but I was pleasantly surprised.
According to this wonderful site about the Oglala Sioux genealogy, Edward was the son of James Dismountshtrice and Susan, but James’s father is unknown. Judging from other records, James father’s name was likely in the Native language, not anglicized. http://freepages.genealogy.rootsweb.ancestry.com/~mikestevens/2010-p/p96.htm#i39369
Another man, simply called Dismountsthrice was also born in 1868, according to this site, which, by the way, is fully sourced.
It makes me wonder if Dismountsthrice and James Dismountsthrice were brothers. It would be interesting to see if the two Dismountsthrice lines born in the 1860s were from a common ancestor. As rare as the name is, one would logically think they would have a common ancestor, but in fact, they may both have adopted this surname for different reasons and their Y chromosomal DNA may not match.
Today the name is often spelled Dismounts Thrice, with two separate words.
Native Heritage Project 
Edward was my great grandfather! According to my dad, our name was changed to Dismounts-Thrice by the French which was a translation of our native name which was loosely translated to ‘gets off his horse three times’ hence the Dismounts-Thrice name. I love having a last name that is so unique and has such an interesting story. We usually just go by Dismounts now for the most part though.