Yes, to a girl name Alice. She was pregnant. Her and her unborn child was killed.
There was Adam Cartwright played by Pernell Roberts, Eric "Hoss" Cartwright played by Dan Blocker, and Joseph Francis Cartwright a.k.a Little Joe Cartwright played by Michale Landon.
Adam Cartwright and Little Joe Cartwright
Joseph 'Little Joe' Cartwright played by Michael Landon. Eric 'Hoss' Cartwright played by Dan Blocker. Adam Cartwright played by Pernell Roberts. (He quit the show in 1965 and was not replaced). Ben Cartwright had one adopted son also, Jamie.
The character Little Joe did not die on the tv series Bonanza. He was the only of the brothers to marry during the regular tv series. Michael Landon, the actor who played Joe Cartwright, died years later (July 1, 1991) suffering from pancreatic cancer. http://en.wikipedia.org/wiki/Little_Joe_(character)
The Oath
Little Joe Cartwright's horse's name is Cochise. It was a pinto horse known for its speed and endurance on the TV show "Bonanza."
There was Adam Cartwright played by Pernell Roberts, Eric "Hoss" Cartwright played by Dan Blocker, and Joseph Francis Cartwright a.k.a Little Joe Cartwright played by Michale Landon.
Adam Cartwright and Little Joe Cartwright
Joseph 'Little Joe' Cartwright played by Michael Landon. Eric 'Hoss' Cartwright played by Dan Blocker. Adam Cartwright played by Pernell Roberts. (He quit the show in 1965 and was not replaced). Ben Cartwright had one adopted son also, Jamie.
The character Little Joe did not die on the tv series Bonanza. He was the only of the brothers to marry during the regular tv series. Michael Landon, the actor who played Joe Cartwright, died years later (July 1, 1991) suffering from pancreatic cancer. http://en.wikipedia.org/wiki/Little_Joe_(character)
The Oath
The beautiful Paint Little Joe Cartwright rod was named Cochise.
The character who lived at The Ponderosa was called Little Joe Cartwright.
Mare
On the TV series Bonanza the three sons of father Ben Cartwright were Adam Cartwright , Eric "Hoss" Cartwright and "Little" Joe - Joseph Cartwright .
Ben Cartwright, a character from the television series "Bonanza," was married to Marie, Little Joe's mother, before her death. The exact date of their marriage is not specified in the series, but it is implied that they were married prior to the events of the show. Marie passed away shortly after giving birth to Little Joe, which is a significant part of Ben's backstory.
If you mean in the TV show Bonanza then there were originally three brothers. (Adam, Hoss, and Little Joe) In later seasons however, after Pernell Roberts quit the show, Ben adopts an orphan named Jamie, so there are technically four Cartwright brothers.