Possibly the Chambers of Chambers & Pinto, owner of Hog River in Hanover. The will of Alexander Chambers planter of Hanover [made in 1741] was proved 04/04/1746. Under the will he left two tracts of land carved out of his unnamed estate to his sons Jacob and Rhodes Chambers; he instructed his trustees to buy further land and 'negroes' for three other sons Richard, William and John; and he left his residual estate to two further sons Edward and Alexander. His will makes no mention of a co-owner named Pinto, however.
The dates listed below have different categories as denoted by the letters in the brackets following each date. Here is a key to explain those letter codes:
1743 [EA] - 1745 [LA] → Joint owner
Tentative association only