Children of Yakup Kaya born in Germany.

Mert (son) born in April. 

Sema (daughter) born in March.

I would like all 3 these sentences be translated, i would appreciate so much, thnak you from my heart

Yakup Kaya´nın Almanya doğumlu çocukları.

Mert (oğul), nisan doğumlu.

Sema (kız), mart doğumlu.

That´s it. Sounds strange to me, both in English and in Turkish. Maybe you wanted the following:

Children of Yakup Kaya WERE born in Germany.

Mert (son) WAS  born in April. 

Sema (daughter) WAS  born in March.

Then it would be;

Yakup Kaya´nın çocukları Almanya´da doğdu.

Oğlu mert nisanda doğdu.

Kızı Sema martta doğdu.

A context would help.