Simplify the following text for a Grade 7 native English-speaking person.
Original: Uccello was married to Tomassa Malifici by 1453 , because in that year Donato ( named after Donatello ) was born , and in 1456 his wife gave birth to Antonia .
Simplified: By 1453 , Uccello was married to Tomassa Malifici . In that year she gave birth to Donato who was named after the sculptor Donatello .