Thursday 14 July 2022 04:18 PM Elon Musk's father, 76, says he's had a SECOND child with his 35-year-old ... trends now

The Musk clan has grown again as Tesla chief Elon Musk's 76-year-old father has revealed he had a second unplanned child with his own step-daughter - who is Elon's step-sister. 

Errol Musk revealed to The Sun that he had a daughter with 35-year-old Jana Bezuidenhout three years ago, just days after it emerged that son Elon had fathered twins - his eighth and ninth children - with one of his executives.

Just a year earlier in 2018, Errol had his first child called Elliot Rush, now five - also unplanned - with Jana, the daughter of his second wife who he had raised since she was four.

They are no longer living together as Jana is 'getting on' at 35 years of age and 'if I'm still around she might wind up back with me,' Errol claimed. 

He said he would like to have them living with him but the last time they visited 'the kids were starting to get on my nerves.'

The 76-year-old refused to rule out having even more children, however, saying: 'The only thing we are on Earth for is to reproduce.'   

The shocking story reportedly angered Elon, 51, who went 'berserk' when he found out his father had had a child with his step-sister.

Although Errol denies having a bad relationship with his billionaire son, Elon has previously described his engineer father as 'evil' and a 'terrible human being.'

Errol, a boat-sailing, plane-flying, electromechanical engineer from South Africa, was originally married to Jana's mother Heide for 18 years and they had two children together.

Although the South African admits he has not done a paternity check on his newest daughter, she 'looks just like my other daughters.'

Jana lived with Errol for about 18 months after Elliot Rush was born and it seems it was during this period that she became pregnant again. 

But the old age lothario observed that Jana was not just one generation younger than he was - that was Heide - but two, and he could not keep up with a woman 41 years his junior.

'I married her mother when she was 25 and I was 45. She was probably one of the best looking woman I've ever seen in my life.' 

Errol did admit that the relationship with Jana shocked his four daughters, who saw Jana as a sibling and found it 'creepy'. 

A source told MailOnline when Elliot was born: 'Errol has known Jana all her life. It has split the family. Errol got married to her mother when Jana was four years old.' 

And yet the Musks might prove the old adage that the apple does not fall far from the tree.

Despite Elon's rage at his father's family-splitting siring, he himself is no stranger to siring multiple children with different mothers.

Recent court documents revealed that the tech billionaire quietly had twins with one of his top executives in November, weeks before he welcomed a child with music star Grimes via surrogate.

The Tesla CEO reportedly had twins with Shivon Zilis, 36, the director of operations at Musk's brain-machine interface company Neuralink. 

It means that Musk now has nine known children with three different women after going through multiple divorces - including two splits from the same wife he married twice. 

Musk and Zilis filed a petition in April to change the twins' names in order to 'have their father's last name and contain their mother's last name as part of their middle name,' according to the court documents. 

The twins were born in November, just weeks before Musk and Claire Boucher, the musician who performs as Grimes, had their second child via surrogate in December. 

Musk shares two children with the Canadian singer; a son named X Æ A-12 or 'X' for short, born in May 2020; and daughter Exa Dark Sideræl, or 'Y' for short, who was born via surrogate in December 2021; and he also has another five kids with his ex-wife, Canadian author Justine Wilson. 

It is the latest in Musk's complicated personal life after the billionaire left behind a troubled childhood in South Africa. 

Musk, who is hoping to take over Twitter for $44billion, experienced difficulties as a child thanks to his rocky relationship with his father and being severely bullied at school.

It got so bad that he was once hospitalized after his bullies pushed him down a set of stairs.