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The record states that Yakov was born to Shmul (registered in Kherson) and Ester-Malka on June 8. The birth record on Jewish Gen is 735. There are no patronymics listed for the parents, but it's very likely that Shmul's father was Leyb. Yakov was married in 1913 to Klara, daughter of Mordko Brodsky. They had daughters Liya and Dina.
You can find the image here: https://archive.od.gov.ua/wp-content/uploads/metrics/Цифровий%20фонд%20користування/daoo_ri_f39/daoo_ri_f39_5_20/0111_0.jpg