Simplify the following text for a Grade 7 native English-speaking person.
Original: After the death of Parr 's second husband , the rich widow began a relationship with Sir Thomas Seymour , the brother of the late queen Jane Seymour , but the King took a liking to her and she saw it as her duty to accept his proposal instead . Thomas Seymour was given a posting in Brussels to remove him from court .
Simplified: Not long afterwards , Catherine was married to Thomas Seymour and soon became pregnant .