Richard Lowther's indentured servitude was to last for 4 years.
Indentured servants:
were mostly English people who pledged to served a master in the Americas
transported to the Americas by a master who they would work for to pay off the debt of bring brought to the Americas
would eventually gain their freedom after some time
Richard Lowther signed an indentured servitude agreement in 1627 with Edward Hurd Cittizen by which he pledged to become an indentured servant for a period of 4 years as shown in the attached document below.
In conclusion, Richard Lowther became an indentured servant in 1627 and if all went well, was free of service in 1631.
It would be an "absolute monarchy" that gives all power to one individual for life, since this person usually gains power either through hereditary succession of through violence.