Add board names to custom components eagle
Just checked one of my libraries. What you want to do is add a ">VALUE" to layer 96 Values, and ">NAME" to layer 95 Names in the symbol file. Do the same thing in the footprint file, but use tNames and tValues layers instead. When you insert the device into your schematic file, the >Name tag should use the prefix value you set in the device file in your library, located at the bottom right of the screen. The >Value should show whatever text is showing in the technology tab I think. Also be sure that those layers are currently set to visible in the schematic, PCB layout, and update libraries. Try adding a new copy of the part too, I did that once and it fixed my issue when I didn't have names showing up. Otherwise, maybe try uploading the library and having us take a look at the component.