Verses with the word shammua in the Old Testament (4 verses):

Numbers 13:4
And these were their names: of the tribe of Reuben, Shammua the son of Zaccur.

1 Chronicles 14:4
Now these are the names of his children which he had in Jerusalem; Shammua, and Shobab, Nathan, and Solomon,

Nehemiah 11:17
And Mattaniah the son of Micha, the son of Zabdi, the son of Asaph, was the principal to begin the thanksgiving in prayer: and Bakbukiah the second among his brethren, and Abda the son of Shammua, the son of Galal, the son of Jeduthun.

Nehemiah 12:18
Of Bilgah, Shammua; of Shemaiah, Jehonathan;