Congo-Brazzaville’s President Denis Sassou-Nguesso has appointed his son Denis-Christel as a cabinet minister – a move that has revived media speculation that he has a dynastic succession in mind.

Not that such a transition looks imminent. Elected to a further term in March, after ruling the country for all but five of the past 41 years, there’s no sign of the 77-year old head of state losing his appetite for wielding power himself.

Yet if Denis-Christel does eventually step into his father’s shoes, this will confirm Congo-Brazzaville’s alignment with an increasingly prevalent pattern in Central Africa.

In neighbouring Gabon President Ali Bongo Ondimba is the son of Omar Bongo, who ruled from 1967 to 2009, while in the Democratic Republic of Congo Joseph Kabila ruled for 17 years after succeeding his assassinated father Laurent-Désiré as head of state in 2001.

Equatorial Guinea’s President Teodoro Obiang – in power since deposing his tyrannical uncle Francisco Macías Nguema, the country’s first head of state, back in 1979 – has already installed his son, Teodoro Nguema Obiang Mangue, as vice-president, in pole position to succeed him.

Teodoro Nguema Obiang Mangue, 52, has been at the centre of numerous corruption allegations

And after Chad’s President Idriss Déby died last month – reportedly from wounds incurred in battle with rebels – his son Mahamat, a four-star army general, rapidly emerged as the leader of the interim ruling military council.

Sources close to Franck – who has always stayed out of politics, pursuing a private sector business career and even taking care not to become involved with bids for public sector contracts – indicate that he has nothing to do with the campaign. But nor has he asked the campaigners to desist, or issued a categorical denial of any ambition to succeed his father.

Of course, political dynasties are far from rare – look at the Bushes and Kennedys in the US.

And currently Uganda is seeing a social media campaign touting General Muhoozi Kainerugaba, son of current head of state Yoweri Museveni, as a potential governing party candidate for the next election in 2026.

And now there are even rumblings about a possible family succession in Cameroon, where an anonymous “citizens’ movement” campaign has begun to promote the image of Franck Biya, son of the 88-year-old President Paul Biya, who is not yet midway through his latest seven-year term.