Simplify the following text for a Grade 6 native English-speaking person.
Original: Bohr married Margrethe NÃ rlund in 1912 , and one of their sons , Aage Bohr , grew up to be an important physicist who in 1975 also received the Nobel prize .
Simplified: He married Margrethe NÃ rlund in 1912 . One of his sons was Aage Bohr , who was also an important physicist .