This is the 7459th most frequent Russian word.
давида
"Давида" is the genitive or accusative case of "Давид," the Russian form of the name David.
In this sentence, 'Давида' functions as a possessive form of the proper noun 'Давид'.
Я нашёл книгу Давида на столе.
I found David's book on the table.
Here, 'Давида' is used as the accusative case of the name 'Давид' since it acts as the direct object of the action.
Мы слышали, как Давида звали в другой комнате.
We heard that David was being called in another room.
In this case, 'Давида' is again showing possession, implying that the house belongs to David.