I would really recommend http://www.itsyourstory.co.uk.

They do lovely, quality books, that include photos of your children. All 3 of mine have one and absolutely have loved them. They will be kept as mementos of those early years.

You can mention friends and family in the stories, but I am not aware of one that accommodates siblings.

Good luck.

I'm considering getting a personalised book about Xmas for my daughters as a Xmas present and wonder if anyone can recommend a company to do it? There's various ones on google but would welcome a personal rec. Ideally I'd get one that could use both daughters names but would go for
one if that's too complicated. I saw a peppa pig personalised book in my search, that might work for my 19 month old if I have to just have one name on a Santa story type one

thanks