Henry and Emily Lee had tickets to see heptathlete Jessica inside the Olympic Stadium but they couldn't go because their baby was being born!
So to honour the gold medallist, the couple named their 6lb 9oz baby Beatrice Jessica Lee.
Their daughter was only 20 minutes old when Ennis won her medal, with her father making sure she was sat with him in front of a television at Bath Hospital to watch the athlete's special moment.
Emily's sister Claire Croxall, who told Ennis about the name tribute on Twitter, said of her niece: "Her mum and dad were supposed to be at the athletics for Super Saturday and were gutted when Emily's waters broke early on Saturday morning as they knew they weren't going to be going after weeks of excitement leading up to it, but of course they were thrilled that their baby was arriving.
"Just 20 minutes after Beatrice Jessica was born at Bath Hospital, baby and daddy snuggled up just in time to see her namesake achieve her Olympic Gold.
They may not have made it to the Olympics, but they have a little part of the Olympics to treasure forever.
Henry and Emily had been desperate to go to the stadium from their home in Derry Hill, Wiltshire, but they gave their tickets to friends when Emily went into labour.
And it seems that the trend for timely baby names is catching after it was revealed that a patriotic mother who gave birth during the Diamond Jubilee celebrations has named her son Union Jack in tribute to the Queen!
Royalist Becky Parker, from Basingstoke, Hants, and her partner Kevin Smart chose the regal name in honour of Her Majesty's 60 years on the throne.
He is thought to be the only person called Union in the UK.
The youngster - whose full name is Union Jack Neil Smart - weighed 7lb 11oz when he was born by emergency Caesarean on June 6.Union - who even has a Union Flag babygrow outfit - was welcomed home with union flag bunting tied up around the house.