His brother James Collins Hawker (c.1821--1901) was to become Comptroller of Customs at Port Adelaide and married Louisa, daughter of Captain Lipson.
His brother James Collins Hawker (c.1821--1901) was to become Comptroller of Customs at Port Adelaide. His brother James Collins Hawker (c.1821--1901) was to become Comptroller of Customs at married Louisa. Louisa was daughter of Captain Lipson.