Simplify the following text for a Grade 5 native English-speaking person.
Original: His childhood names were `` MatsusaburÅ '' ( æ 3\/4 ä é ) and `` Naomatsu '' ( ç æ 3\/4 ) .
Simplified: As a child , he was called `` MatsusaburÅ '' ( æ 3\/4 ä é ) and `` Naomatsu '' ( ç æ 3\/4 ) .