关于 born 后几个介词的区别

有一读者问:born in a poor family 与 born of a poor family 有何区别?

请看下面三个句子的不同含义:

(1)He was born in a poor family. (强调地点,意思是他生在一个贫苦的家庭之中;亦可用 into)

(2)He was born of a poor family. (of=from, 全句意谓他出身贫苦)

(3)He was born to a poor family. (意谓他生到一个贫苦人家,有命中注定的含义)