彼は事業に失敗して家産をすべて失った。
His business failed and he lost the entire family fortune.
放蕩息子が先祖代々の家産を食いつぶした。
The prodigal son squandered the property his family had held for generations.
長男が家産を相続するのが当時の慣習だった。
At the time it was the custom for the eldest son to inherit the family property.