THE most popular baby names in Gwynedd and Anglesey have been revealed.

Data from the Office for National Statistics (ONS) reveals the top choices for names given to babies across England and Wales in 2020.

In Anglesey, five new-borns were called Erin, Lois, Mia or Olivia, making the names joint-top of the list for girls.

And for boys, Oliver and Thomas were joint favourites, each given to seven babies in the area last year.

Naming trends have changed in Isle of Anglesey compared to 2019, when the top girls' name was Efa and the favourite for boys was Osian.

In Gwynedd , nine new-borns were called Alys, making it top of the list for girls.

And for boys, Elis was the favourite, with 18 babies in the area given the name last year.

Naming trends have stayed relatively unchanged for girls in Gwynedd, with this year's favourite the same as in 2019, while the joint-top boys' names then were Hari and Tomos.

Oliver and Olivia were the favourite names nationally last year: the figures show Oliver, George and Arthur took the top three places for boys in England and Wales, while Olivia, Amelia and Isla were most picked for girls.

Oliver has held onto the top spot for boys for the past eight years, while Olivia has been at the girls' number one spot nationally for five years in a row.

The ONS figures show Ivy and Rosie entered the top ten girls' names for the first time last year, replacing Grace and Freya.

And a potential royal influence saw Archie approach the top of the charts, becoming the ninth most popular name and shunting Charlie out of the top ten for the first time since 2005.

ONS statisticians found that naming trends differed depending on a mother's age, with older mothers more likely to choose more traditional names and younger, more modern or shortened versions of classic names.

For mothers younger than 25, the top boys' names were Noah, Archie and Leo, while for those aged 35 and older, they were Oliver, George and Jack.

Younger mothers chose Amelia, Ava and Olivia as their favourite girls' names, but Charlotte replaced Ava in the top three for parents over-35.

Sian Bradford, from the ONS, said: “Oliver and Olivia held onto the top spots as the most popular boys’ and girls’ names in 2020 but some interesting changes took place beneath them.

“Popular culture continues to provide inspiration for baby names, whether it’s characters in our favourite show or trending celebrities.

"Maeve and Otis, characters from the popular programme ‘Sex Education’, have seen a surge in popularity in 2020 while the name Margot has been rapidly climbing since actress Margot Robbie appeared in the popular film ‘The Wolf of Wall Street’."

The top ten girls' names in England and Wales in 2020 were:

• Olivia (3,640 babies)

• Amelia (3,319)

• Isla (2,749)

• Ava (2,679)

• Mia (2,303)

• Ivy (2,166)

• Lily (2,150)

• Isabella (2,052)

• Rosie (2,035)

• Sophia (2,028)

The top ten boys' names were:

• Oliver (4,225)

• George (4,100)

• Arthur (4,052)

• Noah (4,042)

• Muhammed (3,710)

• Leo (3,314)

• Oscar (3,268)

• Harry (3,209)

• Archie (2,944)

• Jack (2,900)