There are only five verified examples of a mother producing two sets of twins with coincident birthdays. The first is that of Laura Shelley (USA), who gave birth to Melissa Nicole and Mark Fredrick Julian Jr in 1990 and Kayla May and Jonathan Price Moore in 2003 on 25 March. The second is that of Caroline Cargado (USA), who gave birth to Keilani Marie and Kahleah Mae in 1996 and Mikayla Anee and Malia Abigail in 2003 on 30 May. The third set is that of Nicola Louise Kenyon (UK), who gave birth to Luke Richard and David Anthony in 1998 and Charlie Adam and Max Harvey in 2005 on 28 February. The fourth is that of Michele Gorney (USA), who gave birth to Kaitlin Mary Garcia and Morgan Mary Garcia in 1996 and Reece Shae Rushton and Riley Sy Rushton on 18 March 2006. The fifth is that of Tracey Bageban (UK) who gave birth to Armani Jafar and Diego Mohamed in 2008 and Elisia Christina and Dolcie Falimeh in 2011 on 27 February.

Tracey Bageban’s two sets of twins are identical twins.