R. Moses Mordecai Joseph b. Raphael Meyuhas(1738–1805), chief rabbi of Jerusalem. He studied in the bet midrash Bet Ya'akov. When only 15 years of age he answered questions on halakhah. After 1778 he was one of the members of the bet midrash Keneset Israel founded by R. Hayyim ibn Attar. After the death of his father-in-law R. Yom Tov Algazi, R. Moses succeeded him as Sephardi chief rabbi (rishon le-Zion) in 1802. He was on friendly terms with R. H. J. D. Azulai. The titles of all his works include the word mayim from the initials of his name (he even signed his responsa "Mayim Meyuhas"). They are: Sha'ar ha-Mayim (Salonika, 1768), novellae on the laws of terefot in Yoreh De'ah, on tractate Hullin and responsa; Berekhot Mayim (ibid., 1789), novellae to the Shulhan Arukh. Many of his novellae and responsa, among them Penei ha-Mayim and Ein ha-Mayim, remain unpublished.

מעבר לשער: "הסכמת רבני עה"ק ירושלם... לחדש ההסכמה הקדומה... שלא יהיה שום חזקה פעה"ק ירוש'... בכל (מינוי) צרכי צבור... כי אם... ביד... רבני ודייני הזמן". ירושלים, שליש ראשון לחדש ניסן תקנ"ז. בין החתומים גם המחבר. דף נז,ב-פח: מים ראשונים. כולל גם שתי תשובות, מאת ר' משה [ב"ר יהונתן?] גאלאנטי (דף כז,ב- ל,א; לה,ב-מ), בדיני אבן העזר.