Korean baby names?

If your child is half-Korean then it makes sense to include a Korean name as part of their name. I think that's a nice way of connecting them to their heritage. However, to make things easier for them if they're living in a Western country, I would give them a Korean middle name, and a more Western first name. But if you do choose to go with a Korean first name, I'd pick one which is easy for people to spell and pronounce. It's your choice though so don't worry too much what your friends think - they'll get used to whatever name you choose. Congrats.

Don’t do it not even full Koreans born in western coutries do that

I would use a Korean name as a middle name.

I have to say that I completely agree with your friend on this one - you should not give your child a traditional Korean name if the baby has no ties to his or her Korean family and will be raised in a Western, English-speaking country. There's absolutely no point in doing that and it will only lead to problems. I say this because in Korean culture, the parents don't just sit down and select a name that they like simply by the sound of it. In Korean culture, great thought is usually given to the selection of a name for a child. Generally, there are three sources: Number One is that the grandparents (usually the father's parents), choose a name... Number Two, the couple goes to see a name-maker, someone who specialises in coming up with names, and they are given a short list from which to select a name... Lastly, the couple themselves can choose a name, similar to the way that people do in Western countries.

Some Korean names sound fairly similar to Western names. I don't know if you're having a girl or a boy, but names like 하나 (Hannah), 새라 (Sarah), 진아 (Gina) all work in both Hangeul and Romanised. For boys, 노아 (Noah) would work, and there are a few names that can be rendered in Korean fairly easily like 헨리 (Henry.)

Generally, Korean given names contain two syllables, so if you want the name to sound authentic, you should try to stick to that, but there are a few names that are one syllable or three syllable that are seen occasionally, but not really common.

Remember that there's more to cultural identity than just a name. Calling your daughter 소희 or 지혜 or calling your son 민우 or 혠호 isn't going to enable the kid to better connect with his or her Korean roots. It's only going to make it hard in everyday life. Calling your kid Hannah and being able to render it in both Hangeul and Romanised forms is okay, but I wouldn't go with an unrecognisable name or one that's difficult to pronounce like 빗나 or 일녕.

Please do not give your child a foreign name that no one can pronounce. Your child will struggle for life. A name is something you use very often. I don't think you need a name in order to hold on to your roots. Additionally, it seems kind of depressing to me to have a name based on your father who you never met (unless of course the father passed away or something).