His grandson , the third Baron , served as Lord High Treasurer to King Henry VI .
The second creation came in 1375 when Ralph de Cromwell was summoned by writ to Parliament as Lord Cromwell .
Cromwell 's grandson , the third Baron , served as Lord High Treasurer to King Henry VI .
The second creation came in 1375 when Ralph de Cromwell was summoned by writ to Parliament as Lord Cromwell .