My daughter will turn 9 on Christmas Day. It always makes me a bit sad that she doesn't have her own day, but we do a GREAT job of making a big deal out of her birthday so that it's never forgotten or second fiddle. She's having a sleepover party on December 18th, but she'll get a huge load of Birthday presents in addition to everything else on Christmas Day.
My son will be 10 on December 7th. His seems far enough in advance of Christmas that it doesn't affect him much. Very few people have ever done the combo gift thing for him. He is having a party on the 6th.
My boyfriend was born on January 5th, so he's right in there too.
My exhusband's birthday was (I guess it still is, but in my life, it's a was) December 8th.
There's many more in my extended family. I have cousins born on the 9th, 15th and 18th of December. An uncle on the 10th and a great-aunt also born Christmas Day. I know there's more than that, but I can't remember them all.