What is "keith-lucas"

Keith-Lucas is a surname. This surname was used by three brothers in honor of their father Keith Lucas:

• Alan Keith-Lucas (1910–1995), social worker and professor
• David Keith-Lucas (1911–1997), aeronautical engineer
• Bryan Keith-Lucas (1912–1996), political scientist
• Sarah Keith-Lucas (1982-), BBC weather presenter, grand-daughter of David