How many children did Sam from Lord of the Rings?

Samwise Gamgee was born in 1380 in The Shire reckoning (SR), and he would have been 38 when the hobbits left on their quest. 1382 SR was Merry's year of birth, and Pippin was born in 1390 SR. Frodo was born in 1368 SR, and Bilbo was born in 1290 SR.