Recorded in over forty spelling forms from Lambert, Lambard and Limprecht, to Lambrich, Lambertini and Lemmens, this surname is almost certainly of very early German origins. As a surname it started life in the 12th century, but the derivation is from a pre 5th century personal name.
Sheldon was raised in Galveston, Texas along with his elder brother and fraternal twin sister (Missy) by his mother, Mary Cooper, an overtly devout Evangelical Christian; and George Cooper, an alcoholic who was never around.
Family. Sheldon is very different from the rest of his family. His mother Mary Cooper is a devout Christian and a loving parent, and is one of the few people who refer to him as Shelly. Leonard Hofstadter called her Sheldon's Kryptonite and will often call her when Sheldon is having serious issues.