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David and Victoria Beckham - People Magazine

How Harper Seven Beckham Got Her Name | David Beckham, Victoria Beckham

David and Victoria Beckham

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David and Victoria Beckham are spending quiet family time together welcoming their new arrival – and first baby girl – Harper Seven Beckham, and relishing their privacy, a rep for the couple tells PEOPLE.

But the question lingers: How did the parents of three boys – Brooklyn, 12, Romeo, 8½, and Cruz, 6½ – ever arrive at the name Harper, let alone Seven?

It may not be as complicated as you think.

Harper is an old English name that Victoria has always loved, PEOPLE has learned, and seven is considered a very lucky spiritual number.

In addition, Harper Seven was born Sunday morning in L.A.'s Cedars-Sinai Medical Center weighing 7 lbs. (and 10 oz.) in the seventh hour in the seventh month – on the seventh day of the week.

As sports fans can't help but also note, seven was David's jersey number for Manchester United and the English national team.

Speaking of numbers, the Irish bookmaking firm of Paddy Power has offered odds of 100:1 on Harper's following in dad's footsteps and going out for the England Women's team. The odds of her becoming a singer in the mode of her former Spice Girl mom are 16:1.

? With additional reporting by SIMON PERRY