彼は彼らの

he ... their

→ 彼
phrase Uncommon #17,091
he ... their This is a combination of 彼は (he) and 彼らの (their), usually followed by a noun or noun phrase. It is not a fixed expression on its own.
JA: 彼は彼らの先生です。
EN: He is their teacher.

彼は彼らの質問に答えることができない

He can't answer their questions.

彼は彼らの仕打ち激怒している

He is furious about the way they treated him.

彼は彼らのやる気の無さ激怒した

He was furious at their lack of motivation.

彼は彼らの計画を熟考した

He carefully considered their plan.

彼は彼らの争い和解させるつもりだ

He intends to reconcile their dispute.

彼は彼らの校長先生その翌日そこへ行くだろうと言った

He said that their principal would go there the next day.

彼は彼らのひとり息子です

He is their only son.

彼は彼らの仲間殺人怒った

He was angry about the murder of one of their comrades.

彼は彼らの計画について何も知らない否定した

He denied knowing anything about their plan.

とうとう彼は彼らの将来に対する計画を打ち明けた

At last, he revealed his plans for their future.

彼は彼らのリーダーとして尊敬された

He was respected as their leader.