parliamentary return states[1] that the persons returned on that occasion
were

Robertus Turcock
Robertus Turcock,

but whether this is a mistake by the recorder or whether two men of the
same name were returned is uncertain.

[Footnote 1: G.R. Park, "The Parliamentary Representation of Yorkshire,
1886," pp. 266 and 283.]

Among the High Sheriffs of Yorkshire in the fourteenth and fifteenth
Centuries were

1390 Richard II. Jacobus de Pykering.
1394 " " "
1398 " " "
1432 Henry VI. Sir Richard de Pykering.
1450 " Sir James de Pykering knt.

In 1311 Johannes de Cropton was one of the members for Scarborough in
Edward II.'s Parliament of that year.

Pickering was held as royal property by William the Conqueror, and with a
few short intervals it has remained crown property until the present day.
It is therefore no matter for surprise to find that several of the
Plantagenet kings came to hunt in the forest. It appears to have been a
royal possession in the time of Henry I., and also in February 1201, when
King John visited the castle,[1] for a charter granted by him to the nuns