Which sentence is correct or more natural?
1a This morning, I and my family went to Tai Po Sea Front Park.
1b This morning, my family and I went to Tai Po Sea Front Park.
2a This morning, he and his family went to Tai Po Sea Front Park.
2b This morning, his family and he went to Tai Po Sea Front Park.
you should use subjective personal pronouns (I, you, we, he, she, they) when the pronoun is the subject of the sentence: "I am hungry."
Use objective personal pronouns (me, you, us, him, her, them) when the pronoun is the object of the sentence: "Give it to him."
Therefore the second sentence is correcy" My family and I went to the park".