Henry VIII...although he really didn't get fat until he was older. He actually, prior to injuries, was known for being very athletic. He was built similar to an American football player and got fat and heavy like aging football players often do.
He divorced his first wife, Catherine of Aragon because she was not able to produce a male heir that lived longer than a few weeks. He married Anne Boleyn but had her executed after she was accused of being unfaithful and also for being unable to produce a male heir.
He had six total wives who are remembered thusly:
Divorced: Catherine of Aragon
Killed: Anne Boleyn
Died: Jane Seymour
Divorced: Anne of Cleves
Killed: Catherine Howard
Survived: Catherine Parr
Edward IV, son of Jane Seymour, lived the longest out of all his male children.
Henry VIII was succeeded by his son Edward IV, who died at the age of 15. Mary I, daughter of Catherine of Aragon, was next, then Elizabeth I, daughter of Anne Boleyn. Elizabeth I never married and produced no heirs, thus ending the Tudor line.