Merari in Wikipedia

According to the Torah, Merari was one of the sons of Levi[1], and the patriarchal founder of the Merarites, one of the four main divisions among the Levites in Biblical times; the Hebrew word Merari means sad/bitter. The Merarites were charged with the care of the boards of the tabernacle & related items as well as the pillars of the court all around & related components. Textual scholars attribute the genealogy to the Book of Generations, a document originating from a similar religiopolitical group and date to the priestly source[2]. According to biblical scholars, the Torah's genealogy for Levi's descendants is actually an aetiological myth reflecting the fact that there were four different groups among the levites - the Gershonites, Kohathites, Merarites, and Aaronids[3][4]; according to biblical scholars, Levite was originally just a job title, deriving from the Minaean word lawi'u meaning priest, rather than having been the name of a tribe.

Read More about Merari in Wikipedia