Arnold Sommerfeld's mother was Cäcile Matthias and his father was Franz Sommerfeld. Franz was a medical doctor who came from a leading Königsberg family. Franz was 48 years old when Arnold was born while his wife Cäcile was 29; they had been married for six years. Arnold wrote autobiographical notes in around 1917 (which he updated towards the end of his life) and we give some quotations from these throughout this biography.
Arnold Sommerfeld 's ina ay Cäcile Matthias at ang kanyang ama ay Franz Sommerfeld. Franz ay isang medikal na doktor na nagmula sa isang nangungunang Königsberg pamilya. Franz ay 48 years old kapag Arnold ay ipinanganak habang ang kanyang asawa Cäcile ay 29; sila had been asawa para sa anim na taon. Arnold wrote autobiographical tala sa paligid ng 1917 (na kung saan siya na-update sa huli ng kanyang buhay) at bigyan kami ng ilang quotations mula sa mga ito sa buong buhay na ito.