Did Maimonides have an older brother?

While Maimonides did not have an older brother, he did in fact have a younger brother named David. Since his father was also Maimon, he would also be known as Maimonides. David Maimonides was a merchant, and supported his brother Moses Maimonides while the latter learned. Tragically, David drowned at sea, causing Rabbi Moses to make his own living as a doctor, which he did admirably in Egypt caring for Salah-a-din's harem, generally treating them for STD's and such. David's death was taken hard by Moses, but he kept going, learning, and working, sleeping about 2-3 hours a day and living to the age of 67.