How to Baptize People Who Don't Know the Name Of

Joseph Smith was during his while he was forming the doctrine and creating the theology was influenced greatly by universalist. And so that definitely led to and influenced his rejection of hell. So I think that the notion of there being endless torment is rejected. How do you baptize people that you don't know the name of? The LDS Church spends a lot of time, energy and effort doing genealogical research.