The movement of a cell within a rhombomere. This process is known to occur as an early step in the generation of anatomical structure from a rhombomere. [ GOC:jid http://purl.obolibrary.org/obo/go/references/0000021 GOC:dgh GOC:cls http://www.ncbi.nlm.nih.gov/pubmed/15629700 GOC:dph ]