How did Pink Floyd get their name?

They first played music together in a group formed by Keith Noble and Clive Metcalfe with Noble's sister Sheilagh. Richard Wright, a fellow architecture student, joined later that year, and the group became a sextet named Sigma 6.

Sigma 6 went through several names, including the Meggadeaths, the Abdabs and the Screaming Abdabs, Leonard's Lodgers, and the Spectrum Five, before settling on the Tea Set

Barrett created the name "Pink Floyd" on the spur of the moment when he discovered that another band, also called the Tea Set, were to perform at one of their gigs. The name is derived from the given names of two blues musicians whose Piedmont blues records Barrett had in his collection, Pink Anderson and Floyd Council.