Simplify the following text for a Grade 8 native English-speaking person.
Original: Johann Baptist Martinelli or Giovanni Battista Martinelli ( b. February 1701 , Vienna - d. June 21 , 1754 , Vienna ) was an Austrian architect and constructor of Italian descent .
Simplified: Johann Baptist Martinelli ( b. February 1701 , Vienna - d. June 21 1754 , Vienna ) was an Austrian architect and constructor of Italian descent .