Beowulf Boritt is an Obie Award-winning set designer who has worked with such theater luminaries as Harold Prince, James Lapine, and Susan Stroman. He currently has one show running on Broadway — “Rock of Ages” — and he has several other New York productions in the works. A Vassar College graduate with a master’s degree in theater design from New York University, he is well known for his whimsical gymnasium set for “The 25th Annual Putnam County Spelling Bee” on Broadway and elsewhere. He has designed for storefront theaters, off-Broadway and regional theaters, and huge arenas. In 2007, he designed the set for Commonwealth Shakespeare Company’s production of “A Midsummer Night’s Dream,” and he is back to design its production of “The Two Gentlemen of Verona,” which begins performances Saturday on Boston Common.