There are examples of middle names (sometimes 2, 3, 4...) since Biblical times, for purposes of indentification (the son of
Eliyahu could be
Hillel Eliyahu), to honour several people (the grandson of a
Meshullam and a
Yosef could be
Yosef Meshullam), or because the names are given by different people (one by the dad, one by the mom...).
~~ Claire ~~