Mr Mbugua's mother, 53-year-old Florence Nyambura, is so angry that she has refused to recognise Wambui as her daughter-in-law.
She is furious that her son decided to marry without seeking her blessing, saying that Mr Mbugua already had a fiancee and planned to marry her next month.
They say age is just but a number, but I do not agree, especially when it comes to marriage.
He also suggested that the community might treat Mr Mbugua as an outcast.
But a Presbyterian Church of East Africa clergyman, Reverend Timothy Njoya, said the marriage is biblically right.
List of Famous Women Who Married Much Younger Men, loosely ranked by fame and popularity.
It has been commonplace for famous men to marry younger women for decades, but there are a few famous females who decided to wed younger men.