Source

DYAM Tunku Mahkota Johor

Tunku Ismail Ibni Sultan Ibrahim is the eldest son of His Royal Highness Sultan Ibrahim and His Royal Highness Raja Zarith Sofiah of six siblings.

Johor State Government,  (15 Jul, 2022).  DYAM Tunku Mahkota Johor.  Retrieved 15 Jul, 2022,  from https://www.johor.gov.my/kerajaan/kesultanan-johor/dyam-tunku-mahkota-johor