Ambrose Attenborough Whyte entered the world just before midnight on the 8th of May.
His parents, from the Welsh county of Powys, say they wanted to honour the conservationist.
Dir David, a longtime Richmond resident, celebrated his 100th last Friday.
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Stephen Whyte, 35, and Lauren Evans, 27, both grew up watching Sir David Attenborough's nature films, so they decided their child's middle name would be Attenborough.