We have twenty male participants with a surname of Crum or variants of Crum. Six participants are in haplogroup I-P37 and seven are in haplogroup R-M269. This means these men share a common ancestor somewhere back in time. Now it is up to these participants to share their genealogical research to see in which generation the common ancestor can be found and, thereby, increase their knowledge of their family tree. Known origins of the participants include the countries of Netherlands, Germany and Russia. Perhaps you can match with one of these participants?