The parks were part of Juan Felipe Peña land grant Rancho Los Putos.

From 1917 to 1920 the 30,000-square-foot graveyard had about 389 wooden marked graves abandoned and the site used for sheep grazing by rancher, William B. O’Connor who had bought the land.

The old Cemetery in Peña Adobe Park is a 38°20′20″N 122°00′46″W / 38.33888°N 122.01269°W / 38.33888; -122.01269[14] In the Peña Adobe Park is the Historical Jack Hume Grove named after William Jack and Charles Hume built in 1850.

In 1897 a railroad line was built at Jack Hume Grove to move his crops to San Francisco for sell.

The site if Jack Hume Grove is on the northern trail of Peña Adobe Park at 38°20′24″N 122°00′38″W / 38.33988°N 122.010694°W / 38.33988; -122.010694 .